Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

 

The Fours – The 400m Hills of England - Hill Reclassifications

The Fours - The 400m Hills of England are the English hills at and above 400m and below 500m in height that have 30m minimum drop.  Accompanying the main list are three sub lists; these are the 400m Sub-Fours, 390m Sub-Fours and 390m Double Sub-Fours.  With their criteria detailed in the Change Registers which are linked in the above titles.

The list is co-authored by Myrddyn Phillips and Aled Williams and the posts that have appeared on Mapping Mountains detailing the additions, reclassifications and deletions to the main P30 list and the sub lists appear below presented chronologically in receding order.

Postscript:  On the 10^th July 2024 the final group of hills in the updated version of this list were published on the Mapping Mountains site.  It was also announced that the sub hills accompanying the main listing of The Fours – The 400m Hills of England now take in just one category, this category is entitled the Sub-Fours. 

Therefore, the 390m Sub-Fours and 390m Double Sub-Fours have been dispensed with and the criteria for the 400m Sub-Fours that included English hills at and above 400m and below 500m in height that have 20m and more and below 30m of drop, have been amended to include English hills at and above 400m and below 500m in height that have 15m and more and below 30m of drop and their title changed to the Sub-Fours.

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Blackkip (NT 799 043) – Sub-Four addition (69th reclassification)

Significant Height Revisions post for Blackkip

Summit Relocations post for Blackkip

There has been an addition to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Blackkip (NT 799 043)

The criteria for the list that this addition applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main list is a sub list entitled the Sub-Fours, the criteria for which are all English hills at or above 400m and below 500m in height that have 15m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillipsand Aled Williams and is available to download in Google Doc format from the Mapping Mountains site.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Blackkip, and it is adjoined to the Thirl Moor group of hills, which are situated in Northumberland, and it is positioned with minor roads to its north, west and east, and the A68 road to its south, and has the small community of Rochester towards the south-east.

When the Introduction to the first group of hills for the updated and revised listing of the The Fours – The 400m Hills of England was published by Mapping Mountains on the 10^th September 2022, it was announced that the accompanying sub lists were being revised with the two 390m categories dispensed with and the criteria and name of the 400m Sub-Fours revised.  The one accompanying sub list is now named the Sub-Fours with its criteria being all English hills 400m and above and below 500m in height that have 15m and more and below 30m of drop.

Prior to this revision this hill was listed with an estimated c 14m of drop, based on the 445m summit spot height positioned at NT 79821 04293 that appears on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map and an estimated c 431m col height, based on interpolation of 10m contouring between 430m – 440m. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the addition of this hill to Sub-Four status is due to LIDAR analysis, resulting in a 448.6m summit height and a 429.3m col height, with these values giving this hill 19.3m of drop, which is sufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  Thirl Moor

Name:  Blackkip

OS 1:50,000 map:  80

Summit Height:  448.6m (LIDAR)

Summit Grid Reference:  NT 79958 04358 (LIDAR)

Col Height:  429.3m (LIDAR)

Col Grid Reference:  NT 80006 04487 (LIDAR)

Drop:  19.3m (LIDAR)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (October 2024)

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Inner Hill (NT 877 088) – Sub-Four exclusion (68th reclassification)

There has been an exclusion to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Inner Hill (NT 877 088)

The criteria for the list that this exclusion applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main list is a sub list entitled the Sub-Fours, the criteria for which are all English hills at or above 400m and below 500m in height that have 15m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and is available to download in Google Doc format from the Mapping Mountains site.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Inner Hill, and it is adjoined to the The Cheviot group of hills, which are situated in Northumberland, and it is positioned with a minor road to its south-west, and has the village of Alwinton towards the south-east.

When the Introduction to the first group of hills for the updated and revised listing of the The Fours – The 400m Hills of England was published by Mapping Mountains on the 10^th September 2022, it was announced that the accompanying sub lists were being revised with the two 390m categories dispensed with and the criteria and name of the 400m Sub-Fours revised.  The one accompanying sub list is now named the Sub-Fours with its criteria being all English hills 400m and above and below 500m in height that have 15m and more and below 30m of drop.

Prior to this revision this hill was listed with 15m of drop, based on the 436m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and the 421m col spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the exclusion of this hill from Sub-Four status is due to LIDAR analysis, resulting in a 435.3m summit height and a 420.8m col height, with these values giving this hill 14.4m of drop, which is insufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  The Cheviot

Name:  Inner Hill

OS 1:50,000 map:  80

Summit Height:  435.3m (LIDAR)

Summit Grid Reference:  NT 87764 08835 (LIDAR)

Col Height:  420.8m (LIDAR)

Col Grid Reference:  NT 87644 09276 (LIDAR)

Drop:  14.4m (LIDAR)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (September 2024)

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Pt. 429.1m (NT 905 114) – Sub-Four exclusion (67th reclassification)

There has been an exclusion to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Pt. 429.1m (NT 905 114) 

The criteria for the list that this exclusion applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main list is a sub list entitled the Sub-Fours, the criteria for which are all English hills at or above 400m and below 500m in height that have 15m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and is available to download in Google Doc format from the Mapping Mountains site.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The hill is being listed by the point (Pt. 429.1m) notation, and it is adjoined to the The Cheviot group of hills, which are situated in Northumberland, and it is positioned with a minor road to its south-west and south-east, and has the village of Alwinton towards the south south-east.

When the Introduction to the first group of hills for the updated and revised listing of the The Fours – The 400m Hills of England was published by Mapping Mountains on the 10^th September 2022, it was announced that the accompanying sub lists were being revised with the two 390m categories dispensed with and the criteria and name of the 400m Sub-Fours revised.  The one accompanying sub list is now named the Sub-Fours with its criteria being all English hills 400m and above and below 500m in height that have 15m and more and below 30m of drop. 

Extract from the Ordnance Survey 1:25,000 Explorer map

Prior to this revision this hill was listed with an estimated c 15m of drop, based on the 429m summit spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map and which latterly appears on the interactive mapping hosted on the WalkLakes website, and an estimated c 414m col height, based on interpolation of 10m contouring between 410m – 420m. 

Extract from the interactive mapping hosted on the WalkLakes website

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the exclusion of this hill from Sub-Four status is due to LIDAR analysis, resulting in a 429.1m summit height and a 414.8m col height, with these values giving this hill 14.4m of drop, which is insufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  The Cheviot

Name:  Pt. 429.1m

OS 1:50,000 map:  80

Summit Height:  429.1m (LIDAR)

Summit Grid Reference:  NT 90545 11499 (LIDAR)

Col Height:  414.8m (LIDAR)

Col Grid Reference:  NT 90579 11580 (LIDAR)

Drop:  14.4m (LIDAR)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (September 2024)

On the 10^th July 2024 the Sub hills accompanying the main listing of the The Fours – The 400m Hills of England were amended.  The 390m Sub-Fours and 390m Double Sub-Fours have been dispensed with, and the remaining 400m Subs are now entitled the Sub-Fours and their criteria amended to include all English hills at and above 400m and below 500m in height that have 15m and more and below 30m of drop.

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Wittaburrow (SX 733 752) – 400m Sub-Four addition (66th reclassification)

There has been an addition to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Wittaburrow (SX 733 752)

The criteria for the list that this addition applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main list are three categories of sub hills, with this hill being added to the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Wittaburrow and it is adjoined to the Broad Barrow group of hills, which are situated in Dartmoor, in the south-west of the country, and it is positioned with the B3387 road to its north and minor roads to its west, south and east, and has the town of Ashburton towards the south south-east.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was not included as it was listed with 19m of drop, based on the 403m summit spot height that appears on the contemporary Ordnance Survey 1:25,000 Explorer map and the 384m col spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the addition of this hill to 400m Sub-Four status is due to LIDAR analysis, resulting in a 404.1m summit height and a 383.5m col height, with these values giving this hill 20.6m of drop, which is sufficient for 400m Sub-Four status.

 

The full details for the hill are:

Group:  Broad Barrow

Name:  Wittaburrow

OS 1:50,000 map:  191

Summit Height:  404.1m (LIDAR)

Summit Grid Reference:  SX 73346 75210 (LIDAR)

Col Height:  383.5m (LIDAR)

Col Grid Reference:  SX 73397 75485 (LIDAR)

Drop:  20.6m (LIDAR)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (March 2024)

 

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Burbage Edge (SK 029 732) – 400m Sub-Four deletion (65th reclassification)

There has been a deletion to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Burbage Edge (SK 029 732)

The criteria for the list that this deletion applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main list are three categories of sub hills, with this hill being deleted from the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Burbage Edge and it is adjoined to the Axe Edge group of hills, which are situated in the Peak District, and it is positioned with a minor road to its east north-east, the A5004 road to its north-east, the A537 road to its south-west and the A54 road to its south-east, and has the town of Buxton towards the east.

Extract from the Ordnance Survey 1:25,000 Explorer map

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was listed as a 400m Sub-Four with an estimated c 21m of drop, based on a 499m summit height and the 479m col spot height that appears on the Ordnance Survey 1:25,000 Explorer map, with an accompanying note stating:

Triangulation pillar with 500.097m flush bracket height situated on the summit area.  However, as the ground at the base of the trig will be at an elevation of approximately 499.8m, this hill is listed as a Sub-Four until a sufficiently accurate survey can confirm the height of the hill.  The summit height is presented in the list as 499m to avoid any confusion that may arise with a rounded 500m height appearing in a list of Sub-Fours.

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the deletion of this hill from 400m Sub-Four status is due to LIDAR analysis, resulting in a 500.2m summit height and a 477.5m col height, with these values giving this hill 22.7m of drop, which as its height exceeds 500m is insufficient for it to be classified as a 400m Sub-Four.

 

The full details for the hill are:

Group:  Axe Edge

Name:  Burbage Edge

OS 1:50,000 map:  119

Summit Height:  500.2m (LIDAR)

Summit Grid Reference:  SK 02961 73235 (LIDAR)

Col Height:  477.5m (LIDAR)

Col Grid Reference:  SK 02748 72017 (LIDAR)

Drop:  22.7m (LIDAR)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (October 2023)

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Strines Moor (SK 211 896) – 400m Sub-Four deletion (64th reclassification)

There has been a deletion to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Strines Moor (SK 211 896)

The criteria for the list that this deletion applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main list are three categories of sub hills, with this hill being deleted from the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Strines Moor and it is adjoined to the Bleaklow Head group of hills, which are situated in the Peak District, and it is positioned with the A57 road to its south and a minor road to its east, and has the city of Sheffield towards the east.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was listed as a 400m Sub-Four with an estimated c 20m of drop, based on an estimated c 411m summit height and the 391m col spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the deletion of this hill from 400m Sub-Four status is due to LIDAR analysis, resulting in a 410.2m summit height and a 390.7m col height, with these values giving this hill 19.5m of drop, which is insufficient for it to be classified as a 400m Sub-Four.

 

The full details for the hill are:

Group:  Bleaklow Head

Name:  Strines Moor

OS 1:50,000 map:  110

Summit Height:  410.2m (LIDAR)

Summit Grid Reference:  SK 21177 89651 (LIDAR)

Col Height:  390.7m (LIDAR)

Col Grid Reference:  SK 21062 89474 (LIDAR)

Drop:  19.5m (LIDAR)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (September 2023) 

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Hawkshead (SD 633 603) – 400m Sub-Four deletion (63rd reclassification)

There has been a deletion to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Hawkshead (SD 633 603)

The criteria for the list that this deletion applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main list are three categories of sub hills, with this hill being deleted from the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Hawkshead and it is adjoined to the Ward’s Stone group of hills, which are situated in the southern Pennines, and it is positioned with a minor road to its north-west and north north-east, the B6480 road farther to its north and the A683 road farther to its north-west, and has the town of High Bentham towards the north.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, the hill was included as a 400m Sub-Four and listed with an estimated c 20m of drop, based on the 408m summit spot height that appears on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map and an estimated c 388m col height based on interpolation of 10m contouring between 380m – 390m. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales. 

LIDAR summit image of Hawkshead

LIDAR col image of Hawkshead

Therefore, the deletion of this hill from 400m Sub-Four status is due to LIDAR analysis, resulting in a 407.2m summit height and a 389.8m col height, with these values giving this hill 17.4m of drop, which is insufficient for it to be classified as a 400m Sub-Four.

 

The full details for the hill are:

Group:  Ward’s Stone

Name:  Hawkshead

OS 1:50,000 map:  97

Summit Height:  407.2m (LIDAR)

Summit Grid Reference:  SD 63395 60302 (LIDAR)

Col Height:  389.8m (LIDAR)

Col Grid Reference:  SD 63762 59950 (LIDAR)

Drop:  17.4m (LIDAR)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (June 2023)

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Thwaite Scars (SD 762 708) – Four reclassified to 400m Sub-Four (62nd reclassification)

There has been a reclassification to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Thwaite Scars (SD 762 708)

The criteria for the list that this reclassification applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main list are three categories of sub hills, with this hill being reclassified to the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Thwaite Scars and it is adjoined to the Whernside group of hills, which are situated in the central Pennines, and it is positioned with the A465 road to its south-west and a minor road to its south-east, and has the village of Austwick towards the south south-east.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was included as a Four and listed with 30m of drop, based on the 408m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and the 378m col spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the reclassification of this hill to 400m Sub-Four status is due to LIDAR analysis, resulting in a 407.1m summit height and a 377.7m col height, with these values giving this hill 29.4m of drop, which is insufficient for it to be classified as a Four. 

 

The full details for the hill are:

Group:  Whernside

Name:  Thwaite Scars

OS 1:50,000 map:  98

Summit Height:  407.1m (LIDAR)

Summit Grid Reference:  SD 76287 70892 (LIDAR)

Col Height:  377.7m (LIDAR)

Col Grid Reference:  SD 76737 71921 (LIDAR)

Drop:  29.4m (LIDAR)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (April 2023)

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Eastgate Quarry (NY 941 369) – 400m Sub-Four addition (61st reclassification)

Significant Height Revisions post for Eastgate Quarry

There has been an addition to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Eastgate Quarry (NY 941 369)

The criteria for the list that this addition applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main list are three categories of sub hills, with this hill being included in the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Eastgate Quarry and it is adjoined to the Burnhope Seat group of hills (Region 35, Section 35A: The Northern Pennines), and it is positioned with the A689 road to its north, and has the town of Stanhope towards the east north-east.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was not included in the accompanying sub list, as it was considered not to meet the criteria used for this sub category, based on the hill being a part of a quarry and therefore contemporary Ordnance Survey maps do not show any meaningful contours. 

Extract from the Ordnance Survey 1:25,000 Explorer map

Since the original publication of this list there have been a number of maps made available online.  Some of these are historic such as the series of Six-Inch maps on the National Library of Scotland website.  Whilst others were digitally updated such as the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map, whilst others are current and digitally updated such as the interactive mapping on the WalkLakes and DataMapWales websites.

One of the mapping resources now available online is the WalkLakes website which hosts an interactive map originated from the Ordnance Survey Open Data programme.  This map has many spot heights not on other publicly available maps and although no spot heights are given for this hill, its contours show the hill exists. 

Extract from the interactive mapping on the WalkLakes website

Another resource now available online is the interactive mapping hosted on the Welsh Government website and entitled the DataMapWales.  This mapping has 5m contours and its detail matches that produced from the OS Terrain 5 product, which compliments much of that produced from LIDAR.  It is this mapping that has a 413m summit height and col contouring between 385m – 390m. 

Extract from the interactive DataMapWales

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the addition of this hill to 400m Sub-Four status is due to LIDAR analysis, resulting in a 413.0m summit height and a 388.0m col height, with these values giving this hill 24.95m of drop, which is sufficient for it to be classified as a 400m Sub-Four. 

 

The full details for the hill are:

Group:  Burnhope Seat

Name:  Eastgate Quarry

OS 1:50,000 map:  91, 92

Summit Height:  413.0m (LIDAR)

Summit Grid Reference:  NY 94100 36976 (LIDAR)

Col Height:  388.0m (LIDAR)

Col Grid Reference:  NY 93740 36402 (LIDAR)

Drop:  24.95m (LIDAR)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (March 2023)

 

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Eastgate Quarry (NY 945 371) – 400m Sub-Four addition (60th reclassification) 

Significant Height Revisions post for Eastgate Quarry

There has been an addition to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Eastgate Quarry (NY 945 371)

The criteria for the list that this addition applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main list are three categories of sub hills, with this hill being included in the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Eastgate Quarry and it is adjoined to the Burnhope Seat group of hills (Region 35, Section 35A: The Northern Pennines), and it is positioned with the A689 road to its north, and has the town of Stanhope towards the east north-east.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was not included in the accompanying sub list, as it was considered not to meet the criteria used for this sub category, based on the hill being a part of a quarry and therefore contemporary Ordnance Survey maps do not show any meaningful contours. 

Extract from the Ordnance Survey 1:25,000 Explorer map

Since the original publication of this list there have been a number of maps made available online.  Some of these are historic such as the series of Six-Inch maps on the National Library of Scotland website.  Whilst others were digitally updated such as the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map, whilst others are current and digitally updated such as the interactive mapping on the WalkLakes and DataMapWales websites.

One of the mapping resources now available online is the WalkLakes website which hosts an interactive map originated from the Ordnance Survey Open Data programme.  This map has many spot heights not on other publicly available maps and although no spot heights are given for this hill, its contours show the hill exists. 

Extract from the interactive mapping on the WalkLakes website

Another resource now available online is the interactive mapping hosted on the Welsh Government website and entitled the DataMapWales.  This mapping has 5m contours and its detail matches that produced from the OS Terrain 5 product, which compliments much of that produced from LIDAR.  It is this mapping that has a 408m summit height and col contouring between 385m – 390m. 

Extract from the interactive DataMapWales

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the addition of this hill to 400m Sub-Four status is due to LIDAR analysis, resulting in a 407.5m summit height and a 384.9m col height, with these values giving this hill 22.6m of drop, which is sufficient for it to be classified as a 400m Sub-Four. 

 

The full details for the hill are:

Group:  Burnhope Seat

Name:  Eastgate Quarry

OS 1:50,000 map:  91, 92

Summit Height:  407.5m (LIDAR)

Summit Grid Reference:  NY 94599 37106 (LIDAR)

Col Height:  384.9m (LIDAR)

Col Grid Reference:  NY 94622 36938 (LIDAR)

Drop:  22.6m (LIDAR)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (February 2023) 

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Burners Hills (NY 942 172) – 400m Sub-Four deletion (59th reclassification)

There has been a deletion to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Burners Hills (NY 942 172)

The criteria for the list that this deletion applies to are:The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main list are three categories of sub hills, with this hill being deleted from the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Burners Hills and it is adjoined to the Cross Fell group of hills, which are situated in the northern Pennines, and it is positioned with the B6276 road to its north-west, the A66 road to its south and the B6277 road to its east, and has the town of Barnard Castle towards the east.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was not classified but was listed with an estimated c 17m of drop, based on the 404m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 387 col height based on interpolation of 5m contouring between 385m – 390m that appeared on the OS Maps website. 

Extract from the Ordnance Survey 1:25000 Explorer map

The mapping on the OS Maps website is the replacement for OS Get-a-map and had contours at 5m intervals which were consistently more accurate compared to the 5m contours that sometimes appear on Ordnance Survey 1:25,000 Explorer maps and used to appear on the online Vector Map Local.  This mapping is digitally updated and had altered since the details for this hill were re-evaluated for the 2^nd edition of the booklet published in April 2018, as the col contouring was now between 380m – 385m.  This is not a one off, as a number of examples have been noted where the contours on this mapping have subsequently changed since first being evaluated.  This re-assessment resulted in an estimated c 383m col height and when coupled with the 404m summit spot height, these values gave this hill an estimated c 21m of drop and it was subsequently listed as a 400m Sub-Four. 

Extract from the interactive mapping that used to be hosted on the OS Maps website

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the deletion of this hill from 400m Sub-Four status is due to LIDAR analysis, resulting in a 403.1m summit height and a 383.2m col height, with these values giving this hill 19.9m of drop, which is insufficient for it to be classified as a 400m Sub-Four.

 

The full details for the hill are:

Group:  Cross Fell

Name:  Burners Hills

OS 1:50,000 map:  91, 92

Summit Height:  403.1m (LIDAR)

Summit Grid Reference:  NY 94228 17203 (LIDAR)

Col Height:  383.2m (LIDAR)

Col Grid Reference:  NY 94255 16900 (LIDAR)

Drop:  19.9m (LIDAR)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (January 2023) 

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Tod Fell (NY 512 020) – 400m Sub-Four deletion (58th reclassification)

There has been a deletion to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Tod Fell (NY 512 020)

The criteria for the list that this deletion applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main list are three categories of sub hills, with this hill being deleted from the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Tod Fell and it is adjoined to the Tarn Crag group of hills, which are situated in the far eastern fells of the Lake District, and it is positioned with a minor road to its west and the A6 road to its east, and has the town of Kendal towards the south.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was included as a 400m Sub-Four and listed with 20m of drop, based on the 401m summit spot height that appears on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map and the 381m col spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the deletion of this hill from 400m Sub-Four status is due to LIDAR analysis, resulting in a 400.3m summit height and a 381.7m col height, with these values giving this hill 18.7m of drop, which is insufficient for it to be classified as a 400m Sub-Four.

 

The full details for the hill are:

Group:  Tarn Crag

Name:  Tod Fell

OS 1:50,000 map:  90

Summit Height:  400.3m (LIDAR)

Summit Grid Reference:  NY 51224 02058 (LIDAR)

Col Height:  381.7m (LIDAR)

Col Grid Reference:  NY 51297 02371 (LIDAR)

Drop:  18.7m (LIDAR)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (December 2022) 

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Langhow Pike (NY 529 131) – 400m Sub-Four deletion (57th reclassification)

There has been a deletion to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Langhow Pike (NY 529 131)

The criteria for the list that this deletion applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main list are three categories of sub hills, with this hill being deleted from the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Langhow Pike and it is adjoined to the Tarn Crag group of hills, which are situated in the far eastern fells of the Lake District, and it is positioned with a minor road to its north-west and the A6 road to its east, and has the village of Shap towards the north-east.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was included as a 400m Sub-Four and listed with an estimated c 21m of drop, based on the 405m summit spot height that appears on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map and an estimated c 384m col height, based on interpolation of 10m contouring between 380m – 390m. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the deletion of this hill from 400m Sub-Four status is due to LIDAR analysis, resulting in a 403.6m summit height and a 384.1m col height, with these values giving this hill 19.5m of drop, which is insufficient for it to be classified as a 400m Sub-Four.

 

The full details for the hill are:

Group:  Tarn Crag

Name:  Langhow Pike

OS 1:50,000 map:  90

Summit Height:  403.6m (LIDAR)

Summit Grid Reference:  NY 52952 13105 (LIDAR)

Col Height:  384.1m (LIDAR)

Col Grid Reference:  NY 52630 12761 (LIDAR)

Drop:  19.5m (LIDAR)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (December 2022)

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Pt. 428.7m (NY 300 017) – 400m Sub-Four deletion (56th reclassification)

There has been a deletion to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Pt. 428.7m (NY 300 017)

The criteria for the list that this deletion applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main list are three categories of sub hills, with this hill being deleted from the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The hill is being listed by the point (Pt. 428.7m) notation as an appropriate name for it either through local enquiry and/or historic research has not been found by the authors, and it is adjoined to the The Old Man of Coniston group of hills, which are situated in the Lake District, and it is positioned with a minor road to its north and the A593 road to its east, and has the village of Coniston towards the south.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was included as a 400m Sub-Four and listed with an estimated c 20m of drop, based on the 428m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 408m col height, based on interpolation of 10m contouring between 400m – 410m. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales. 

LIDAR summit image of Pt. 428.7m

LIDAR col image of Pt. 428.7m

Therefore, the deletion of this hill from 400m Sub-Four status is due to LIDAR analysis, resulting in a 428.7m summit height and a 409.3m col height, with these values giving this hill 19.4m of drop, which is insufficient for it to be classified as a 400m Sub-Four.

 

The full details for the hill are:

Group:  The Old Man of Coniston

Name:  Pt. 428.7m

OS 1:50,000 map:  90

Summit Height:  428.7m (LIDAR)

Summit Grid Reference:  NY 30015 01705 (LIDAR)

Col Height:  409.3m (LIDAR)

Col Grid Reference:  NY 29954 01653 (LIDAR)

Drop:  19.4m (LIDAR)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (December 2022)

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Peathill Crag (NY 228 013) – 400m Sub-Four addition (55th reclassification)

There has been an addition to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Peathill Crag (NY 228 013)

The criteria for the list that this addition applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main list are three categories of sub hills, with this hill being added to the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Peathill Crag, and it is adjoined to the Scafell Pike group of hills, which are situated in the Lake District, and it is positioned with a minor road to its north and south-east, and has the hamlet of Seathwaite towards the south.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was not included in the accompanying sub list, as it was considered not to meet the criteria used for this sub category. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, during the updating of this list for the 2^nd edition this hill was noted and listed with an estimated c 15m of drop, based on an estimated c 401m summit height and an estimated c 386m col height, with both heights based on interpolation of 5m contouring that appeared on the interactive mapping hosted on the OS Maps website.

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the addition of this hill to 400m Sub-Four status is due to LIDAR analysis, resulting in a 402.7m summit height and a 382.3m col height, with these values giving this hill 20.4m of drop, which is sufficient for it to be classified as a 400m Sub-Four.

 

The full details for the hill are:

Group:  Scafell Pike

Name:  Peathill Crag

OS 1:50,000 map:  89, 90

Summit Height:  402.7m (LIDAR)

Summit Grid Reference:  NY 22837 01336 (LIDAR)

Col Height:  382.3m (LIDAR)

Col Grid Reference:  NY 22964 01331 (LIDAR)

Drop:  20.4m (LIDAR)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (December 2022)

 

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Belles Knott (NY 297 085) – 400m Sub-Four deletion (54th reclassification)

There has been a deletion to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Belles Knott (NY 297 085)

The criteria for the list that this deletion applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main list are three categories of sub hills, with this hill being deleted from the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Belles Knott, and it is adjoined to the High Raise group of hills, which are situated in the Lake District, and it is positioned with the B5343 road to its south and the A591 road to its east, and has the village of Grasmere towards the east.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was included as a 400m Sub-Four and listed with an estimated c 21m of drop, based on an estimated c 493m summit height and an estimated c 472m col height, with both heights based on interpolation of 5m contouring that appeared on the interactive mapping hosted on the OS Maps website. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the deletion of this hill from 400m Sub-Four status is due to LIDAR analysis, resulting in a 490.6m summit height and a 471.65 col height, with these values giving this hill 18.9m of drop, which is insufficient for it to be classified as a 400m Sub-Four.

 

The full details for the hill are:

Group:  High Raise

Name:  Belles Knott

OS 1:50,000 map:  89, 90

Summit Height:  490.6m (LIDAR)

Summit Grid Reference:  NY 29711 08585 (LIDAR)

Col Height:  471.65m (LIDAR)

Col Grid Reference:  NY 29595 08661 (LIDAR)

Drop:  18.9m (LIDAR)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (December 2022)

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Gale Fell (NY 143 167) – 400m Sub-Four deletion (53rd reclassification)

There has been a deletion to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Gale Fell (NY 143 167)

The criteria for the list that this deletion applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main list are three categories of sub hills, with this hill being deleted from the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Gale Fell, and it is adjoined to the High Stile group of hills, which are situated in the Lake District, and it is positioned with minor roads to its north and west, and the B5289 road to its east, and has the village of Buttermere towards the east.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was included as a 400m Sub-Four and listed with an estimated c 20m of drop, based on the 499m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 479m col height, based on interpolation of 10m contouring between 470m – 480m that appears on the Ordnance Survey 1:25,000 Explorer map. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the deletion of this hill from 400m Sub-Four status is due to LIDAR analysis, resulting in a 499.2m summit height and a 479.7m col height, with these values giving this hill 19.5m of drop, which is insufficient for it to be classified as a 400m Sub-Four.

 

The full details for the hill are:

Group:  High Stile

Name:  Gale Fell

OS 1:50,000 map:  89

Summit Height:  499.2m (LIDAR)

Summit Grid Reference:  NY 14365 16796 (LIDAR)

Col Height:  479.7m (LIDAR)

Col Grid Reference:  NY 14307 16522 (LIDAR)

Drop:  19.5m (LIDAR)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (December 2022)

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Cold Stones (SE 125 636) – 400m Sub-Four reclassified to Four (52nd reclassification)

Summit Relocations post for Cold Stones

Significant Height Revisions post for Cold Stones

There has been a reclassification to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill prompted by Joe Nuttall who produced a summit analysis programme using LIDAR, and then confirmed by LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Cold Stones (SE 125 636)

The criteria for the list that this reclassification applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main list are three categories of sub hills, with this hill reclassified from the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Cold Stones, and it is adjoined to the Whernside group of hills, which are situated in the Yorkshire Dales, and it is positioned with the B6265 road to its north and a minor road to its west, and has the town of Pateley Bridge towards the east north-east.

Extract from the Ordnance Survey 1:25,000 Explorer map

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was included as a 400m Sub-Four and listed with an estimated c 26m of drop, based on an estimated c 417m summit height and a 391m col height, the latter based on the spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map, with an accompanying note stating; The one that got away, or more appropriately, the one that was quarried away, as Cold Stones was once an English 400m P30, with an imperial height of 1,403ft (427.6m) recorded for the summit on the OS 1:10,560 map, with the OS enlarged Geograph map giving a height of 391m for the extant col, thereby confirming that the hill used to have 37m of drop.  The summit has been quarried leaving the highpoint of the hill at c 417m (SE 120 641) on the western rim of the former summit dome, thereby reducing the drop to c 26m and relegating the hill to Sub-Four status. 

Extract from the DataMapWales showing the hill with contours

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the reclassification of this hill from 400m Sub-Four status is due to LIDAR analysis, resulting in a 421.2m summit height and a 390.8m col height, with these values giving this hill 30.4m of drop, which is sufficient for it to be classified as a Four.

 

The full details for the hill are:

Group:  Whernside

Name:  Cold Stones

OS 1:50,000 map:  99

Summit Height:  421.2m (LIDAR)

Summit Grid Reference:  SE 12584 63663 (LIDAR)

Col Height:  390.8m (LIDAR)

Col Grid Reference:  SE 11773 63538 (LIDAR)

Drop:  30.4m (LIDAR)

 

Our thanks to Ronnie Bowron for bringing the details of this hill to our attention.

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (November 2022)

 

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Weather Hill (NY 929 391) – 400m Sub-Four addition (51st reclassification)

Significant Height Revisions post for Weather Hill

There has been an addition to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill prompted by Joe Nuttall who produced a summit analysis programme using LIDAR, and then confirmed by LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Weather Hill (NY 929 391)

The criteria for the list that this addition applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main list are three categories of sub hills, with this hill being included in the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Weather Hill and it is adjoined to the Burnhope Seat group of hills (Region 35, Section 35A: The Northern Pennines), and it is positioned with minor roads to its north, west and east, and the A689 road to its south, and has the town of Stanhope towards the east.

Extract from the Ordnance Survey 1:25,000 Explorer map

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was not included in the accompanying sub list, as it was considered not to meet the criteria used for this sub category, based on the hill being a part of a quarry and therefore contemporary Ordnance Survey maps do not show any meaningful contours. 

Extract from the WalkLakes website showing the hill with contours

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the addition of this hill to 400m Sub-Four status is due to LIDAR analysis, resulting in a 410.0m summit height and a 389.0m col height, with these values giving this hill 21.0m of drop, which is sufficient for it to be classified as a 400m Sub-Four. 

 

The full details for the hill are:

Group:  Burnhope Seat

Name:  Weather Hill

OS 1:50,000 map:  91, 92

Summit Height:  410.0m (LIDAR)

Summit Grid Reference:  NY 92906 39126 (LIDAR)

Col Height:  389.0m (LIDAR)

Col Grid Reference:  NY 93281 39255 (LIDAR)

Drop:  21.0m (LIDAR)

 

Our thanks to Ronnie Bowron for bringing the details of this hill to our attention.

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (November 2022)

 

  

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Silver How (NY 324 066) – 390m Sub-Four reclassified to 390m Double Sub-Four (50th reclassification)

There has been a reclassification to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill prompted by Joe Nuttall who produced a summit analysis programme using LIDAR, and confirmed by LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Silver How (NY 324 066)

The criteria for the list that this reclassification applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main listing of The Fours are three categories of sub hills, with this hill being reclassified from a 390m Sub-Four to a 390m Double Sub-Four, the criteria for the former are all English hills at or above 390m and below 400m in height that have 30m minimum drop and the criteria for the latter are all English hills at or above 390m and below 400m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Silver How, and it is adjoined to the Scafell Pike group of hills, which are situated in The Lake District (Region 34, Section 34B: The Central and Western Fells), and it is positioned with the B5343 road to its south-west and a minor road to its east, and has the village of Grasmere towards the north-east.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was included as a 390m Sub-Four and listed with an estimated c 31m of drop, based on the 395m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map, and an estimated c 364m col height based on interpolation of 5m contouring between 360m – 365m that appeared on the OS Maps website. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the reclassification of this hill from 390m Sub-Four status to 390m Double Sub-Four status is due to LIDAR analysis, resulting in a 393.8m summit height and a 364.1m col height, with these values giving this hill 29.7m of drop, which is insufficient for it to be classified as a 390m Sub-Four.

 

The full details for the hill are:

Group:  Scafell Pike

Name:  Silver How

OS 1:50,000 map:  90

Summit Height:  393.8m (LIDAR)

Summit Grid Reference:  NY 32477 06643 (LIDAR)

Col Height:  364.1m (LIDAR)

Col Grid Reference:  NY 32135 96621 (LIDAR)

Drop:  29.7m (LIDAR)

 

Our thanks to Ronnie Bowron for bringing the details of this hill to our attention.

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (November 2022)

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Great Castle How (NY 307 078) – 400m Sub-Four addition (49th reclassification)

Summit Relocations post for Great Castle How

There has been an addition to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill prompted by Joe Nuttall who produced a summit analysis programme using LIDAR, and then confirmed by LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Great Castle How (NY 307 078)

The criteria for the list that this addition applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main list are three categories of sub hills, with this hill being included in the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Great Castle How and it is adjoined to the High Raise group of hills, which are situated in The Lake District (Region 34, Section 34B: The Central and Western Fells), and it is positioned with the B5343 road to its south and the A591 road to its east, and has the village of Grasmere towards the east.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was not included in the accompanying sub list, as it was considered not to meet the criteria used for this sub category.  With its drop to an adjacent and connecting 500m spot heighted hill considered insufficient for qualification. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the addition of this hill to 400m Sub-Four status is due to LIDAR analysis, resulting in a 498.2m summit height and a 472.1m col height, with these values giving this hill 26.0m of drop, which is sufficient for it to be classified as a 400m Sub-Four.  With the caveat that LIDAR gives the summit of this hill higher than the adjacent and connected hill that has a 500m spot height on the contemporary Ordnance Survey 1:25,000 Explorer map. 

 

The full details for the hill are:

Group:  High Raise

Name:  Great Castle How

OS 1:50,000 map:  90

Summit Height:  498.2m (LIDAR)

Summit Grid Reference:  NY 30791 07836 (LIDAR)

Col Height:  472.1m (LIDAR)

Col Grid Reference:  NY 30551 07712 (LIDAR)

Drop:  26.0m (LIDAR)

 

Our thanks to Ronnie Bowron for bringing the details of this hill to our attention.

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (November 2022)

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Lang Scar (SD 885 652) – 400m Sub-Four addition (48th reclassification)

There has been an addition to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill prompted by Joe Nuttall who produced a summit analysis programme using LIDAR, and then confirmed by LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Lang Scar (SD 885 652)

The criteria for the list that this addition applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main listing of The Fours are three categories of sub hills, with this hill being included in the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Lang Scar and it is adjoined to the Pen y Ghent group of hills, which are situated in the Yorkshire Dales (Region 35, Section 35B: The Central Pennines), and it is positioned with minor roads to its north-east and immediately to its south-west, and has the village of Malham towards the south south-east.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was not included in the accompanying sub list, as it was considered not to meet the criteria used for this sub category.

However, during the updating of this list for the 2^nd edition this hill was noted and listed with an estimated c 18m of drop, based on the 416m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 398m col height, based on interpolation of 10m contouring between 390m – 400m. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the addition of this hill to 400m Sub-Four status is due to LIDAR analysis, resulting in a 416.8m summit height and a 396.4m col height, with these values giving this hill 20.4m of drop, which is sufficient for it to be classified as a 400m Sub-Four.

 

The full details for the hill are:

Group:  Pen y Ghent

Name:  Lang Scar

OS 1:50,000 map:  98

Summit Height:  416.8m (LIDAR)

Summit Grid Reference:  SD 88553 65292 (LIDAR)

Col Height:  396.4m (LIDAR)

Col Grid Reference:  SD 88396 65380 (LIDAR)

Drop:  20.4m (LIDAR)

 

Our thanks to Ronnie Bowron for bringing the details of this hill to our attention.

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (November 2022)

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Fisher Crag (NY 304 163) – 400m Sub-Four addition (47th reclassification)

There has been an addition to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill prompted by Joe Nuttall who produced a summit analysis programme using LIDAR, and then confirmed by LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Fisher Crag (NY 304 163)

The criteria for the list that this addition applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main listing of The Fours are three categories of sub hills, with this hill being included in the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Fisher Crag and it is adjoined to the High Raise group of hills, which are situated in The Lake District (Region 34, Section 34B: The Central and Western Fells), and it is positioned with the B5289 road to its west and a minor road, Thirlmere and the A591 road to its east, and has the town of Keswick towards the north north-west.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was not included in the accompanying sub list, as it was considered not to meet the criteria used for this sub category.

However, during the updating of this list for the 2^nd edition this hill was noted and listed with an estimated c 17m of drop, based on the 422m summit spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map and an estimated c 405m col height, based on interpolation of 10m contouring between 400m – 400m. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the addition of this hill to 400m Sub-Four status is due to LIDAR analysis, resulting in a 422.4m summit height and a 401.6m col height, with these values giving this hill 20.7m of drop, which is sufficient for it to be classified as a 400m Sub-Four.

 

The full details for the hill are:

Group:  High Raise

Name:  Fisher Crag

OS 1:50,000 map:  90

Summit Height:  422.4m (LIDAR)

Summit Grid Reference:  NY 30491 16304 (LIDAR)

Col Height:  401.6m (LIDAR)

Col Grid Reference:  NY 30389 16273 (LIDAR)

Drop:  20.7m (LIDAR)

 

Our thanks to Ronnie Bowron for bringing the details of this hill to our attention.

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (October 2022) 

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Pt. 476.0m (NY 399 044) – 400m Sub-Four addition (46th reclassification)

There has been an addition to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill prompted by Joe Nuttall who produced a summit analysis programme using LIDAR, and then confirmed by LIDAR analysis conducted by Myrddyn Phillips, with the col having been surveyed with a Leica GS15 by John Barnard, Jim Bloomer and Graham Jackson. 

LIDAR image of Pt. 476.0m (NY 399 044)

The criteria for the list that this addition applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main listing of The Fours are three categories of sub hills, with this hill being included in the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The hill is being listed by the point (Pt. 476.0m) notation as an appropriate name for it either through local enquiry and/or historic research has not been found by the authors, and it is adjoined to the High Street group of hills, which are situated in The Lake District (Region 34, Section 34C: The Eastern Fells), and it is positioned with a minor road to its north-west, the A591 road to its west and the A592 road to its east, and has the town of Ambleside towards the west.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was not included in the accompanying sub list, as it was considered not to meet the criteria used for this sub category.

However, during the updating of this list for the 2^nd edition this hill was noted and listed with an estimated c 17m of drop, based on the 474m summit spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map and an estimated c 457m col height, based on interpolation of 10m contouring between 450m – 460m. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the addition of this hill to 400m Sub-Four status is due to LIDAR analysis and the height and position of the col confirmed by a Leica GS15 survey,  resulting in a 476.0m summit height and a 454.8m col height, with these values giving this hill 21.2m of drop, which is sufficient for it to be classified as a 400m Sub-Four.

 

The full details for the hill are:

Group:  High Street

Name:  Pt. 476.0m

OS 1:50,000 map:  90

Summit Height:  476.0m (LIDAR)

Summit Grid Reference:  NY 39930 04485 (LIDAR)

Col Height:  454.8m (Leica GS15)

Col Grid Reference:  NY 39696 04372 (Leica GS15)

Drop:  21.2m (LIDAR summit and Leica GS15 col)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (October 2022)

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Blackstone Edge (SK 050 644) – 400m Sub-Four deletion (45th reclassification)

There has been a deletion to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill prompted by Joe Nuttall who produced a summit analysis programme using LIDAR, and then by LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Blackstone Edge (SK 050 644)

The criteria for the list that this deletion applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main listing of The Fours are three categories of sub hills, with this hill being deleted from the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Blackstone Edge, and it is adjoined to the Axe Edge group of hills, which are situated in The Southern Pennines (Region 36), and it is positioned with minor roads to its north and south, the A53 road to its west and the B5053 road to its east, and has the town of Buxton towards the north.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was included as a 400m Sub-Four and listed with an estimated c 20m of drop, based on an estimated c 403m summit height and an estimated c 383m col height, with both heights based on interpolation of 5m contouring. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales. 

LIDAR summit image of Blackstone Edge

LIDAR col image of Blackstone Edge

Therefore, the deletion of this hill from 400m Sub-Four status is due to LIDAR analysis, resulting in a 400.9m summit height and a 384.3m col height, with these values giving this hill 16.6m of drop, which is insufficient for it to be classified as a 400m Sub-Four.

 

The full details for the hill are:

Group:  Axe Edge

Name:  Blackstone Edge

OS 1:50,000 map:  119

Summit Height:  400.9m (LIDAR)

Summit Grid Reference:  SK 05031 64470 (LIDAR)

Col Height:  384.3m (LIDAR)

Col Grid Reference:  SK 04862 64358 (LIDAR)

Drop:  16.6m (LIDAR)

 

Our thanks to Ronnie Bowron for bringing the details of this hill to our attention.

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (October 2022)

 

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Pt. 414.7m (SK 109 679) – Four reclassified to 400m Sub-Four (44th reclassification)

Summit Relocations post for Pt. 414.7m

Significant Name Changes post for Pt. 414.7m

There has been a reclassification to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived by Joe Nuttall who produced a summit analysis programme using LIDAR, and then by LIDAR analysis initially conducted by Jim Bloomer and subsequently conducted by Myrddyn Phillips. 

LIDAR image of Pt. 414.7m (SK 109 679)

The criteria for the list that this reclassification applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main listing of The Fours are three categories of sub hills, with this hill reclassified to the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The hill is being listed by the point (Pt. 414.7m) notation as an appropriate name for it either through local enquiry and/or historic research has not been found by the authors, and it is adjoined to the Axe Edge group of hills, which are situated in The Southern Pennines (Region 36), and it is positioned with the A515 road to its south and a minor road to its east, and has the town of Buxton towards the north-west.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was included as a Four and listed with an estimated c 30m of drop, based on the 414m spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 384m col height, based on interpolation of 5m contouring between 380m – 385m. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the reclassification of this hill to 400m Sub-Four status is due to LIDAR analysis, resulting in a 414.7m summit height and a 385.5m col height, with these values giving this hill 29.2m of drop, which is insufficient for it to be classified as a Four.

 

The full details for the hill are:

Group:  Axe Edge

Name:  Pt. 414.7m

OS 1:50,000 map:  119

Summit Height:  414.7m (LIDAR)

Summit Grid Reference:  SK 10999 67962 (LIDAR)

Col Height:  385.5m (LIDAR)

Col Grid Reference:  SK 10588 67661 (LIDAR)

Drop:  29.2m (LIDAR)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (October 2022)

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Dow Low (SK 094 680) – 400m Sub-Four reclassified to Four (43rd reclassification)

Significant Height Revisions post for Dow Low

There has been a reclassification to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Dow Low (SN 094 680)

The criteria for the list that this reclassification applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main listing of The Fours are three categories of sub hills, with this hill reclassified from the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Dow Low, and it is adjoined to the Axe Edge group of hills, which are situated in The Southern Pennines (Region 36), and it is positioned with the B5053 road to its west and the A515 road to its north-east, and has the town of Buxton towards the north-west.

Extract from the Ordnance Survey 1:25,000 Explorer map

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was included as a 400m Sub-Four and listed with an estimated c 29m of drop, based on an estimated c 426m summit height and an estimated c 397m col height, with both heights based on interpolation of 5m contouring that appeared on the OS Maps website. 

Extract from the OS Maps website

The hill is also shown in this extract from the WalkLakes website

The prominence of this hill has been created from the quarrying activities of the Hindlow Quarry.  When it was included as a 400m Sub-Four, imagery on Google Maps and Google Earth was examined with the conclusion that the hill is solid and stable.

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the reclassification of this hill from 400m Sub-Four status is due to LIDAR analysis, resulting in a 430.1m summit height and a 396.3m col height, with these values giving this hill 33.8m of drop, which is sufficient for it to be classified as a Four.

 

The full details for the hill are:

Group:  Axe Edge

Name:  Dow Low

OS 1:50,000 map:  119

Summit Height:  430.1m (LIDAR)

Summit Grid Reference:  SK 09419 68071 (LIDAR)

Col Height:  396.3m (LIDAR)

Col Grid Reference:  SK 09251 68164 (LIDAR)

Drop:  33.8m (LIDAR)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (September 2022)

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Countess Cliff (SK 053 710) – 390m Double Sub-Four deletion (42nd reclassification)

There has been a deletion to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived by Joe Nuttall who produced a summit analysis programme using LIDAR, and then by LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Countess Cliff (SK 053 710)

The criteria for the list that this deletion applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main listing of The Fours are three categories of sub hills, with this hill being deleted from the 390m Double Sub-Four category, the criteria for which are all English hills at or above 390m and below 400m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Countess Cliff, and it is adjoined to the Axe Edge group of hills, which are situated in The Southern Pennines (Region 36), and it is positioned with a minor road to its north and the A53 road to its west, and has the town of Buxton towards the north.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was included as a 390m Double Sub-Four and listed with an estimated c 22m of drop, based on the 390m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map, and an estimated c 368m col height based on interpolation of 5m contouring between 365m – 370m. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.Therefore, the deletion of this hill from 390m Double Sub-Four status is due to LIDAR analysis, resulting in a 388.7m summit height and a 368.05m col height, with these values giving this hill 20.65m of drop, which is insufficient for it to be classified as a 390m Double Sub-Four.

 

The full details for the hill are:

Group:  Axe Edge

Name:  Countess Cliff

OS 1:50,000 map:  119

Summit Height:  388.7m (LIDAR)

Summit Grid Reference:  SK 05360 71003 (LIDAR)

Col Height:  368.05m (LIDAR)

Col Grid Reference:  SK 05018 71067 (LIDAR)

Drop:  20.65m (LIDAR)

 

Our thanks to Ronnie Bowron for bringing the details of this hill to our attention.

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (September 2022)

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Long Crags (NT 955 214) – 400m Sub-Four addition (41st reclassification)

Significant Height Revisions post for Long Crags

Summit Relocations post for Long Crags

Significant Name Changes post for Long Crags

There has been an addition to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived by Joe Nuttall who produced a summit analysis programme using LIDAR, and then by LIDAR analysis conducted by Myrddyn Phillips. 

Long Crags (NT 955 214).  Photo: Aled Williams

The criteria for the list that this addition applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main listing of The Fours are three categories of sub hills, with this hill being included in the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Long Crags, and it is adjoined to the The Cheviot group of hills, which are situated in Northumberland (Region 33: Scottish Border to the River Tyne), and it is positioned with a minor road to its north and the A697 road to its east, and has the town of Wooler towards the north north-east.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was not included in the accompanying sub list, as it was considered not to meet the criteria used for this sub category. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, during the updating of this list for the 2^nd edition this hill was noted and listed with 18m of drop, based on the 432m summit spot height positioned at NT 95699 21058 that appears on the Ordnance Survey 1:50,000 Lanranger and 1:25,000 Explorer map and the 414m col spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map.

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales. 

LIDAR image of Long Crags (NT 955 214)

Therefore, the addition of this hill to 400m Sub-Four status is due to LIDAR analysis, resulting in a 439.5m summit height and a 415.8m col height, with these values giving this hill 23.7m of drop, which is sufficient for it to be classified as a 400m Sub-Four.

 

The full details for the hill are:

Group:  The Cheviot

Name:  Long Crags

OS 1:50,000 map:  74, 75

Summit Height:  439.5m (LIDAR)

Summit Grid Reference:  NT 95597 21432 (LIDAR)

Col Height:  415.8m (LIDAR)

Col Grid Reference:  NT 95503 20955 (LIDAR)

Drop:  23.7m (LIDAR)

 

Our thanks to Ronnie Bowron for bringing the details of this hill to our attention.

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (September 2022)

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Crook (SD 664 935) – 400m Sub-Four addition (40th reclassification)

Significant Height Revisions post for Crook

There has been an addition to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived by Joe Nuttall who produced a summit analysis programme using LIDAR, and then by LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Crook (SD 664 935)

The criteria for the list that this addition applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main listing of The Fours are three categories of sub hills, with this hill being added to the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Crook, and it is adjoined to the The Calf group of hills, which are situated in the Howgill Fells (Region 35, Section 35A: The Northern Pennines), and it is positioned with the B6257 road to its west, the A684 road to its south and the A683 road to its east, and has the town of Sedbergh towards the south south-west.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was not included in the accompanying sub list, as it was considered not to meet the criteria used for this sub category. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, during the updating of this list for the 2^nd edition this hill was noted and listed with an estimated c 17m of drop, based on the 462m summit spot height that appears on the Harvey 1:25,000 Superwalker map to the Howgill Fells and an estimated c 445m col height based on interpolation of 10m contouring between 440m – 450m that appear on the Ordnance Survey 1:25,000 Explorer map. 

Extract from the Harvey 1:25,000 Superwalker map to the Howgill Fells

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the addition of this hill to 400m Sub-Four status is due to LIDAR analysis, resulting in a 464.7m summit height and a 444.4m col height, with these values giving this hill 20.3m of drop, which is sufficient for it to be classified as a 400m Sub-Four.

 

The full details for the hill are:

Group:  The Calf

Name:  Crook

OS 1:50,000 map:  98

Summit Height:  464.7m (LIDAR)

Summit Grid Reference:  SD 66458 93550 (LIDAR)

Col Height:  444.4m (LIDAR)

Col Grid Reference:  SD 66410 93726 (LIDAR)

Drop:  20.3m (LIDAR)

 

Our thanks to Ronnie Bowron for bringing the details of this hill to our attention.

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (August 2022)

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Peat Law (NT 906 101) – 400m Sub-Four reclassified to Four (39th reclassification)

There has been a reclassification to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived by Joe Nuttall who produced a summit analysis programme using LIDAR, and then by LIDAR analysis initially conducted by Jim Bloomer and subsequently by Myrddyn Phillips. 

LIDAR image of Peat Law (NT 906 101)

The criteria for the list that this reclassification applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main listing of The Fours are three categories of sub hills, with this hill being reclassified from the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Peat Law, and it is adjoined to the The Cheviot group of hills, which are situated in Northumberland (Region 33: Scottish Border to the River Tyne), and it is positioned with the A68 road to its south-west and the A697 road to its east, and has the town of Rothbury towards the south-east.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was included as a 400m Sub-Four and listed with an estimated c 29m of drop, based on the 472m summit spot height that appears on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map, and an estimated c 443m col height based on interpolation of 10m contouring between 440m – 450m. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.  

LIDAR summit image of Peat Law

LIDAR col image of Peat Law

Therefore, the reclassification of this hill from 400m Sub-Four status is due to LIDAR analysis, resulting in a 472.0m summit height and a 441.7m col height, with these values giving this hill 30.4m of drop, which is sufficient for it to be classified as a Four.

 

The full details for the hill are:

Group:  The Cheviot

Name:  Peat Law

OS 1:50,000 map:  80

Summit Height:  472.0m (LIDAR)

Summit Grid Reference:  NT 90610 10125 & NT 90607 10132 (LIDAR)

Col Height:  441.7m (LIDAR)

Col Grid Reference:  NT 89986 10276 (LIDAR)

Drop:  30.4m (LIDAR)

 

Our thanks to Ronnie Bowron for bringing the details of this hill to our attention.

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (August 2022)

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Dryhope Hill (NT 928 116) – 400m Sub-Four reclassified to Four (38th reclassification)

There has been a reclassification to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived by Joe Nuttall who produced a summit analysis programme using LIDAR, and then by LIDAR analysis initially conducted by Jim Bloomer and subsequently by Myrddyn Phillips. 

LIDAR image of Dryhope Hill (NT 928 116)

The criteria for the list that this reclassification applies to are:

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main listing of The Fours are three categories of sub hills, with this hill being reclassified from the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Dryhope Hill, and it is adjoined to the The Cheviot group of hills, which are situated in Northumberland (Region 33: Scottish Border to the River Tyne), and it is positioned with the A68 road to its south-west and the A697 road to its east, and has the town of Rothbury towards the south-east.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was included as a 400m Sub-Four and listed with 29m of drop, based on the 486m summit spot height that appears on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map, and the 457m col spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

Therefore, the reclassification of this hill from 400m Sub-Four status is due to LIDAR analysis, resulting in a 486.4m summit height and a 456.2m col height, with these values giving this hill 30.2m of drop, which is sufficient for it to be classified as a Four.

 

The full details for the hill are:

Group:  The Cheviot

Name:  Dryhope Hill

OS 1:50,000 map:  80

Summit Height:  486.4m (LIDAR)

Summit Grid Reference:  NT 92877 11671 (LIDAR)

Col Height:  456.2m (LIDAR)

Col Grid Reference:  NT 93181 11858 (LIDAR)

Drop:  30.2m (LIDAR)

 

Our thanks to Ronnie Bowron for bringing the details of this hill to our attention.

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (August 2022)

 

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Knott (NY 714 012) – Four reclassified to 400m Sub-Four (37th reclassification)

There has been a reclassification to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill prompted by Joe Nuttall who produced a summit analysis programme using LIDAR.  These details are being evaluated by a number of people, including Ronnie Bowron who passed the details of this hill to us.  LIDAR analysis was then conducted by Aled Williams and subsequently by Myrddyn Phillips.

LIDAR image of Knott (NY 714 012)

The criteria for the list that this reclassification applies to are: 

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main listing of The Fours are three categories of sub hills, with this hill being reclassified to the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Knott, and it is adjoined to The Calf group of hills, which are situated in the Howgill Fells (Region 35, Section 35A: The Northern Pennines), and it is positioned with a minor road to its south-east, the A685 road to its north and the A683 road to its east, and has the village of Ravenstonedale towards the north north-east.

Extract from the Ordnance Survey 1:25,000 Explorer map

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was included as a Four and listed with an estimated c 31m of drop, based on the 1,522.8ft (464.2m) surface height on the Ordnance Survey series of Six-Inch maps and an estimated c 433m col height based on a comparison between Ordnance Survey 1:25,000 Explorer map and Harvey 1:25,000 Superwalker map col contours, with details in the accompanying Notes section stating; Four status assigned via comparison of OS and Harvey map col contours, with the former between 430m – 440m and the latter between 420m – 435m indicating that the col is between 430m – 435m, with an estimated height of c 433m and a drop of c 31m. 

Extract from the Ordnance Survey series of Six-Inch maps

Extract from the Harvey 1:25,000 Superwalker map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales. 

Therefore, the reclassification of this hill to 400m Sub-Four status is due to LIDAR analysis, resulting in a 465.8m summit height and a 437.1m col height, with these values giving this hill 28.7m of drop, which is insufficient for it to be classified as a Four.

 

The full details for the hill are:

Group:  The Calf

Name:  Knott

OS 1:50,000 map:  91

Summit Height:  465.8m (LIDAR)

Summit Grid Reference:  NY 71422 01291 (LIDAR)

Col Height:  437.1m (LIDAR)

Col Grid Reference:  NY 70987 01254 (LIDAR)

Drop:  28.7m (LIDAR)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Our thanks to Ronnie Bowron for passing on the details of this hill to us

Aled Williams and Myrddyn Phillips (March 2022)

Mapping Mountains - Hill Reclassifications - The Fours - The 400m Hills of England

Eldon Hill (SK 115 811) – 400m Sub-Four reclassified to Four (36th reclassification)

There has been a reclassification to the listing of the The Fours – The 400m Hills of England, with the summit height, col height and their locations, the drop and status of the hill derived by Joe Nuttall who produced a summit analysis programme using LIDAR, and then by LIDAR analysis initially conducted by Jim Bloomer and subsequently by Aled Williams. 

LIDAR image of Eldon Hill (SK 115 811)

The criteria for the list that this reclassification applies to are: 

The Fours – The 400m Hills of England.  English hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main listing of The Fours are three categories of sub hills, with this hill being reclassified from the 400m Sub-Four category, the criteria for which are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and the 2^nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24^th April 2018.

The Fours - The 400m Hills of England by Myrddyn Phillips and Aled Williams

The name the hill is listed by is Eldon Hill, and it is adjoined to the Kinder Scout group of hills, which are situated in the Peak District (Region 36: The Southern Pennines), and it is positioned with minor roads to its north-west and south-west, and the A623 road farther to its south, and has the small village of Peak Forest towards the south.

When the 2^nd edition of the The Fours – The 400m Hills of England was published by Mapping Mountains Publications in April 2018, this hill was included as a 400m Sub-Four and listed with an estimated c 28m of drop, based on the 470m summit spot height that appears on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map, and an estimated c 442m col height based on interpolation of 10m contouring between 440m – 450m. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales. 

LIDAR summit image of Eldon Hill

LIDAR col image of Eldon Hill

Therefore, the reclassification of this hill from 400m Sub-Four status is due to LIDAR analysis, resulting in a 470.7m summit height and a 440.1m col height, with these values giving this hill 30.6m of drop, which is sufficient for it to be classified as a Four.

 

The full details for the hill are:

Group:  Kinder Scout

Name:  Eldon Hill

OS 1:50,000 map:  110

Summit Height:  470.7m (LIDAR)

Summit Grid Reference:  SK 11561 81143 (LIDAR)

Col Height:  440.1m (LIDAR)

Col Grid Reference:  SK 12172 81178 (LIDAR)

Drop:  30.6m (LIDAR)

 

For the additions, deletions and reclassifications to The Fours – The 400m Hills of England reported on Mapping Mountains since the December 2013 publication of the 1^st edition of this list by Europeaklist please consult the following Change Registers:

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Aled Williams and Myrddyn Phillips (February 2022)