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

Chinley Churn (SK 035 836) – Sub-Four exclusion (105th reclassification)

There has been an exclusion from 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 a Leica 530 summit survey conducted by John Barnard, David Gradwell, George Gradwell, Graham Jackson and Myrddyn Phillips and LIDAR col analysis conducted by Myrddyn Phillips. 

Chinley Churn (SK 035 836)

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 Chinley Churn, and it is adjoined to the Kinder Scout group of hills, which are situated in the Peak District, and it is positioned with the A6015 road to its north-west, the B6062 road and the A6 road to its south, and the A624 road to its east, and has the town of Whaley Bridge towards the south-west.

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 15m of drop, based on the 451.8m Leica 530 summit survey and an estimated c 437m col height, based on interpolation of 10m contouring between 430m – 440m 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.                  

LIDAR image of Chinley Churn (SK 035 836)

Therefore, the exclusion of this hill from Sub-Four status is due to a Leica 530 summit survey and LIDAR col analysis, resulting in a 451.8m summit height and a 437.2m col height, with these values giving this hill 14.6m of drop, which is insufficient for it to be classified as a Sub-Four. 

 

The full details for the hill are:

Group:  Kinder Scout

Name:  Chinley Churn

OS 1:50,000 map:  110

Summit Height:  451.8m (Leica 530)

Summit Grid Reference:  SK 03555 83641 (Leica 530)

Col Height:  437.2m (LIDAR)

Col Grid Reference:  SK 03516 84292 (LIDAR)

Drop:  14.6m (Leica 530 summit and LIDAR 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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (November 2025)

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

Totley Moor (SK 274 800) – Sub-Four addition (104th 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 Totley Moor (SK 274 800)

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 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 Totley 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 A625 road to its north-west, the B6054 road to its south and the A621 road to its east, and has the city of Sheffield towards the north-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 not listed as it was missed from the initial composition that included the P15s, it was subsequently reassessed and was listed with an estimated c 19m of drop, based on an estimated 402m 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.

Therefore, the addition of this hill to Sub-Four status is due to LIDAR analysis, resulting in a 402.1m summit height and a 382.4m col height, with these values giving this hill 19.8m of drop, which is sufficient for it to be classified as a Sub-Four. 

 

The full details for the hill are:

Group:  Bleaklow Head

Name:  Totley Moor

OS 1:50,000 map:  110

Summit Height:  402.1m (LIDAR)

Summit Grid Reference:  SK 27492 80002 (LIDAR)

Col Height:  382.4m (LIDAR)

Col Grid Reference:  SK 27515 80594 (LIDAR)

Drop:  19.8m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (November 2025)

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

Duckpit (SE 030 089) – Sub-Four exclusion (103rd reclassification)

Significant Name Changes post for Duckpit

There has been an exclusion from 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 Duckpit (SE 030 089)

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 now listed by is Duckpit, and this was derived from the Ordnance Survey series of Six-Inch maps, and it is adjoined to the Bleaklow Head group of hills, which are situated in the Peak District, and it is positioned with a minor road to its north and south-west, the A62 road to its north-west and the A635 road to its south, and has the village of Marsden towards the north-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 16m of drop, based on the 421m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 405m 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.

Therefore, the exclusion of this hill from Sub-Four status is due to LIDAR analysis, resulting in a 421.0m summit height and a 407.4m col height, with these values giving this hill 13.7m of drop, which is insufficient for it to be classified as a Sub-Four. 

 

The full details for the hill are:

Group:  Bleaklow Head

Name:  Duckpit

OS 1:50,000 map:  110

Summit Height:  421.0m (LIDAR)

Summit Grid Reference:  SE 03044 08998 (LIDAR)

Col Height:  407.4m (LIDAR)

Col Grid Reference:  SE 03342 08562 (LIDAR)

Drop:  13.7m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (November 2025)

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

Lurden Top (SD 989 121) – Sub-Four exclusion (102nd reclassification)

There has been an exclusion from 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 Lurden Top (SD 989 121)

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 Lurden Top, and it is adjoined to the Way Stone Edge group of hills, which are situated in the Pennines of northern England, and it is positioned with the A672 road to its west and the A640 road to its south-east, and has the town of Rochdale towards the west.

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 15m of drop, based on the 429m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 414m col height, based on interpolation of 5m contouring between 410m – 415m. 

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 429.0m summit height and a 415.5m col height, with these values giving this hill 13.6m of drop, which is insufficient for it to be classified as a Sub-Four. 

 

The full details for the hill are:

Group:  Way Stone Edge

Name:  Lurden Top

OS 1:50,000 map:  109

Summit Height:  429.0m (LIDAR)

Summit Grid Reference:  SD 98937 12165 (LIDAR)

Col Height:  415.5m (LIDAR)

Col Grid Reference:  SD 99146 12314 (LIDAR)

Drop:  13.6m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (November 2025)   

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

Spence Moor (SD 794 393) – Sub-Four addition (101st 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 Spence Moor (SD 794 393)

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 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 Spence Moor, and it is adjoined to the Pendle group of hills, which are situated in the Pennines of northern England, and it is positioned with the A59 road to its north-west and the A6068 road to its south-east, and has the town of Clitheroe towards the west north-west.

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 not listed, with subsequent interpolation giving it an estimated c 18m of drop, based on an estimated c 461 summit height based on interpolation of 5m contouring and the uppermost 460m ring contour and the 443m col spot height 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.

LIDAR col image of Spence Moor

LIDAR summit image of Spence Moor

Therefore, the addition of this hill to Sub-Four status is due to LIDAR analysis, resulting in a 460.6m summit height and a 442.7m col height, with these values giving this hill 17.9m of drop, which is sufficient for it to be classified as a Sub-Four.

The full details for the hill are:

Group:  Pendle

Name:  Spence Moor

OS 1:50,000 map:  103

Summit Height:  460.6m (LIDAR)

Summit Grid Reference:  SD 79433 39330 (LIDAR)

Col Height:  442.7m (LIDAR)

Col Grid Reference:  SD 78802 40021 (LIDAR)

Drop:  17.9m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (November 2025) 

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

Crow Hill (SD 958 368) – Sub-Four exclusion (100th reclassification)

There has been an exclusion from 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 Crow Hill (SD 958 368)

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 Crow Hill, and it is adjoined to the Pendle group of hills, which are situated in the Pennines of northern England, and it is positioned with minor roads to its north and south, and the A6033 road to its south-east, and has the village of Trawden towards the west north-west.

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 16m of drop, based on the 458m summit spot height and the 442m col spot height that appear 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 exclusion of this hill from Sub-Four status is due to LIDAR analysis, resulting in a 458.7m summit height and a 444.1m col height, with these values giving this hill 14.6m of drop, which is insufficient for it to be classified as a Sub-Four. 

 

The full details for the hill are:

Group:  Pendle

Name:  Crow Hill

OS 1:50,000 map:  103

Summit Height:  458.7m (LIDAR)

Summit Grid Reference:  SD 95878 36889 (LIDAR)

Col Height:  444.1m (LIDAR)

Col Grid Reference:  SD 95761 36836 (LIDAR)

Drop:  14.6m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (October 2025)

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

Bride Stones Moor (SD 932 267) – Sub-Four exclusion (99th reclassification)

There has been an exclusion from 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 Bride Stones Moor (SD 932 267)

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 Bride Stones Moor, and it is adjoined to the Pendle group of hills, which are situated in the Pennines of northern England, and it is positioned with minor roads to its north, west and east, and the A646 road to its south, and has the village of Todmorden towards the south.

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 15m of drop, based on the 438m summit spot height that appears on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map and an estimated c 423m col height, based on interpolation of 5m contouring between 420m – 425m. 

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 437.85m summit height and a 423.8m col height, with these values giving this hill 14.1m of drop, which is insufficient for it to be classified as a Sub-Four.             

 

The full details for the hill are:

Group:  Pendle

Name:  Bride Stones Moor

OS 1:50,000 map:  103

Summit Height:  437.85m (LIDAR)

Summit Grid Reference:  SD 93235 26728 (LIDAR)

Col Height:  423.8m (LIDAR)

Col Grid Reference:  SD 93152 26965 (LIDAR)

Drop:  14.1m (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 2025)

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

Warrendale Knotts (SD 836 643) – Sub-Four addition (98th 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 Warrendale Knotts (SD 836 643)

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 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 Warrendale Knotts, and it is adjoined to the Pen y Ghent group of hills, which are situated in the Pennines of northern England, and it is positioned encircled by minor roads, with the B6479 road and B6480 road farther to its west, and has the town of Settle towards the west south-west.

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 not listed, with subsequent interpolation giving it an estimated c 13m of drop, based on an estimated c 416 summit height and an estimated c 403m col height, with both heights based on interpolation of 10m contouring that appear 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 addition of this hill to Sub-Four status is due to LIDAR analysis, resulting in a 417.2m summit height and a 401.0m col height, with these values giving this hill 16.3m of drop, which is sufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  Pen y Ghent

Name:  Warrendale Knotts

OS 1:50,000 map:  98

Summit Height:  417.2m (LIDAR)

Summit Grid Reference:  SD 83674 64368 (LIDAR)

Col Height:  401.0m (LIDAR)

Col Grid Reference:  SD 83596 64470 (LIDAR)

Drop:  16.3m (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 2025)

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

Kilnsey Moor (SD 948 669) – Sub-Four exclusion (97th reclassification)

Significant Height Revisions post for Kilnsey Moor

There has been an exclusion from 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 Kilnsey Moor (SD 948 669)

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 Kilnsey Moor, and it is adjoined to the Pen y Ghent group of hills, which are situated in the Pennines of northern England, and it is positioned with a minor road to its south, and the B6160 road to its east, and has the village of Threshfield 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 468m 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 the 453m col spot height 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 exclusion of this hill from Sub-Four status is due to LIDAR analysis, resulting in a 463.4m summit height and a 453.4m col height, with these values giving this hill 9.9m of drop, which is insufficient for it to be classified as a Sub-Four. 

 

The full details for the hill are:

Group:  Pen y Ghent

Name:  Kilnsey Moor

OS 1:50,000 map:  98

Summit Height:  463.4m (LIDAR)

Summit Grid Reference:  SD 94838 66954 (LIDAR)

Col Height:  453.4m (LIDAR)

Col Grid Reference:  SD 94926 67281 (LIDAR)

Drop:  9.9m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (October 2025)

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

Pt. 399.4m (SD 830 642) – Sub-Four exclusion (96th reclassification)

There has been an exclusion from 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. 399.4m (SD 830 642)

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. 399.4m) notation, and it is adjoined to the Pen y Ghent group of hills, which are situated in the Pennines of northern England, and it is positioned with minor roads to its north and south, and the B6479 road to its west, and has the town of Settle towards the west south-west.

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 18m of drop, based on the 400m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 382 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 exclusion of this hill from Sub-Four status is due to LIDAR analysis, resulting in a 399.4m summit height and a 379.8m col height, with these values giving this hill 19.6m of drop, with its height insufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  Pen y Ghent

Name:  Pt. 399.4m

OS 1:50,000 map:  98

Summit Height:  399.4m (LIDAR)

Summit Grid Reference:  SD 83009 64264 (LIDAR)

Col Height:  379.8m (LIDAR)

Col Grid Reference:  SD 83049 64341 (LIDAR)

Drop:  19.6m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (October 2025)

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

Brown Ridge (SE 095 781) – Sub-Four exclusion (95th reclassification)

There has been an exclusion from 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 Brown Ridge (SE 095 781)

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 Brown Ridge, and it is adjoined to the Whernside group of hills, which are situated in the Pennines of northern England, and it is positioned with minor roads to its north-west, south and north-east, and has the town of Masham towards the east north-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 15m of drop, based on the 479m summit spot height that appears on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map and an estimated c 464 col height, based on interpolation of 10m contouring between 460m – 470m. 

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 478.9m summit height and a 464.1m col height, with these values giving this hill 14.8m of drop, which is insufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  Whernside

Name:  Brown Ridge

OS 1:50,000 map:  99

Summit Height:  478.9m (LIDAR)

Summit Grid Reference:  SE 09593 78143 (LIDAR)

Col Height:  464.1m (LIDAR)

Col Grid Reference:  SE 09301 78272 (LIDAR)

Drop:  14.8m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (October 2025) 

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

Redmire Forest (SE 041 949) – Sub-Four exclusion (94th reclassification)

There has been an exclusion from 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 summit image of Redmire Forest (SE 041 949)

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 Redmire Forest, and it is adjoined to the Great Shunner Fell group of hills, which are situated in the Pennines of northern England, and it is positioned encircled by minor roads, with the B6270 road farther to its north and the A684 road farther to its south, and has the town of Leyburn 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 15m of drop, based on an estimated c 471 summit height, based on interpolation of its uppermost 470m ring contour that appears on the Ordnance Survey 1:25,000 Explorer map, and the 456m 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. 

LIDAR col image of Redmire Forest (summit at SE 041 949)

Therefore, the exclusion of this hill from Sub-Four status is due to LIDAR analysis, resulting in a 470.8m summit height and a 456.4m 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:  Great Shunner Fell

Name:  Redmire Forest

OS 1:50,000 map:  98

Summit Height:  470.8m (LIDAR)

Summit Grid Reference:  SE 04191 94946 (LIDAR)

Col Height:  456.4m (LIDAR)

Col Grid Reference:  SE 03697 95217 (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 2025)

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

Great Wegber (SD 994 912) – Sub-Four exclusion (93rd reclassification)

Significant Height Revisions post for Great Wegber

Summit Relocations post for Great Wegber

There has been an exclusion from 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 Great Wegber (SD 994 912)

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 Great Wegber, and it is adjoined to the Great Shunner Fell group of hills, which are situated in the Pennines of northern England, and it is positioned with minor roads to its west, south and east, with the A684 road farther to its south, and has the town of Leyburn towards the 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 15m of drop, based on an estimated c 421 summit height and an estimated c 406m col height, with both heights based on interpolation of 10m contouring 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 exclusion of this hill from Sub-Four status is due to LIDAR analysis, resulting in a 418.7m summit height and a 406.1m col height, with these values giving this hill 12.6m of drop, which is insufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  Great Shunner Fell

Name:  Great Wegber

OS 1:50,000 map:  98

Summit Height:  418.7m (LIDAR)

Summit Grid Reference:  SD 99490 91225 (LIDAR)

Col Height:  406.1m (LIDAR)

Col Grid Reference:  SD 99350 91694 (LIDAR)

Drop:  12.6m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (September 2025)

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

Harehope Hill (NZ 006 465) – Sub-Four exclusion (92nd reclassification)

There has been an exclusion from 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 Harehope Hill (NZ 006 465)

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 Harehope Hill, and it is adjoined to the Burnhope Seat group of hills, which are situated in the Pennines of northern England, and it is positioned with the B6278 road to its west and minor roads to its north-east, east and south, and has the town of Stanhope towards the south.

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 15m of drop, based on the 443m summit spot height that appears on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map, and an estimated c 428m col height, based on interpolation of 5m contouring between 425m – 430m. 

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 442.1m summit height and a 429.6m col height, with these values giving this hill 12.4m of drop, which is insufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  Burnhope Seat

Name:  Harehope Hill

OS 1:50,000 map:  87

Summit Height:  442.1m (LIDAR)

Summit Grid Reference:  NZ 00640 46523 (LIDAR)

Col Height:  429.6m (LIDAR)

Col Grid Reference:  NZ 00522 46177 (LIDAR)

Drop:  12.4m (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 (August 2025)

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

Heights Quarry (NY 923 391) – Sub-Four addition (91st reclassification)

Significant Height Revisions post for Heights 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 Heights Quarry (NY 923 391)

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 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 Heights Quarry, and it is adjoined to the Burnhope Seat group of hills, which are situated in the Pennines of northern England, 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.

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 not listed, with subsequent interpolation giving it an estimated c 14m of drop, based on the 427m summit spot height that appears on the DataMapWales and an estimated c 413m col height, based on interpolation of 5m contouring between 410m – 415m. 

Extract from the 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 Sub-Four status is due to LIDAR analysis, resulting in a 427.6m summit height and a 412.2m col height, with these values giving this hill 15.4m of drop, which is sufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  Burnhope Seat

Name:  Heigts Quarry

OS 1:50,000 map:  91, 92

Summit Height:  427.6m (LIDAR)

Summit Grid Reference:  NY 92377 39123 (LIDAR)

Col Height:  412.2m (LIDAR)

Col Grid Reference:  NY 92227 39261 (LIDAR)

Drop:  15.4m (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 (August 2025) 

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

Durham Woods Tower (NZ 014 239) – Sub-Four exclusion (90th reclassification)

Significant Name Changes post for Durham Woods Tower

There has been an exclusion from 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 Durham Woods Tower (NZ 014 239)

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 now listed by is Durham Woods Tower, and it is adjoined to the Burnhope Seat group of hills, which are situated in the Pennines of northern England, and it is positioned with the B6282 road to its south, and has the village of Eggleston towards the west.

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 15m of drop, based on the 418m 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 403m 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.

Therefore, the exclusion of this hill from Sub-Four status is due to LIDAR analysis, resulting in a 418.6m summit height and a 404.9m col height, with these values giving this hill 13.7m of drop, which is insufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  Burnhope Seat

Name:  Durham Woods Tower

OS 1:50,000 map:  92

Summit Height:  418.6m (LIDAR)

Summit Grid Reference:  NZ 01448 23976 (LIDAR)

Col Height:  404.9m (LIDAR)

Col Grid Reference:  NZ 01460 24039 (LIDAR)

Drop:  13.7m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (August 2025)

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

Middle Fell (NY 852 109) – Sub-Four exclusion (89th reclassification)

There has been an exclusion from 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 Middle Fell (NY 852 109)

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 Middle Fell, and it is adjoined to the Great Shunner Fell group of hills, which are situated in the Pennines of northern England, and it is positioned with minor roads to its north-east and west, with the A66 road farther to its north-east and the A685 road farther to its west, and has the town of Kirkby Stephen towards the west south-west.

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 15m of drop, based on the 482m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 467m col height, based on interpolation of 10m contouring between 460m – 470m. 

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 482.9m summit height and a 470.7m col height, with these values giving this hill 12.2m of drop, which is insufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  Great Shunner Fell

Name:  Middle Fell

OS 1:50,000 map:  91, 92

Summit Height:  482.9m (LIDAR)

Summit Grid Reference:  NY 85278 10985 (LIDAR)

Col Height:  470.7m (LIDAR)

Col Grid Reference:  NY 85239 10893 (LIDAR)

Drop:  12.2m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (July 2025)

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

Crag Hill (NY 567 067) – Sub-Four exclusion (88th reclassification)

There has been an exclusion from 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 Crag Hill (NY 567 067)

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 Crag Hill, and it is adjoined to the Tarn Crag group of hills, which are situated in the English Lake District, and it is positioned with the A6 road to its west and the M6 motorway to its east, and has the village of Tebay towards the east 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 16m of drop, based on the 402m 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 386m col height, based on interpolation of 10m contouring between 380m – 390m 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 exclusion of this hill from Sub-Four status is due to LIDAR analysis, resulting in a 401.5m summit height and a 386.8m col height, with these values giving this hill 14.6m of drop, which is insufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  Tarn Crag

Name:  Crag Hill

OS 1:50,000 map:  90

Summit Height:  401.5m (LIDAR)

Summit Grid Reference:  NY 56758 06744 (LIDAR)

Col Height:  386.8m (LIDAR)

Col Grid Reference:  NY 55987 07257 (LIDAR)

Drop:  14.6m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (July 2025)

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

Pt. 423.8m (NY 480 011) – Sub-Four exclusion (87th reclassification)

There has been an exclusion from 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. 423.8m (NY 480 011)

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. 423.8m) notation, and it is adjoined to the High Street group of hills, which are situated in the English Lake District, and it is positioned with a minor road to its south-west and east, and the A591 road farther to its south-west and the A6 road farther to its east, and has the town of Windermere towards the west south-west.

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 423m summit spot height that appears on the Ordnance Survey 1:50,000 Landranger map and that also 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 408m col height, based on interpolation of 10m contouring between 400m – 410m that appears on the Ordnance Survey 1:25,000 Explorer map. 

Extract from the Ordnance Survey 1:50,000 Landranger 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 423.8m summit height and a 410.4m col height, with these values giving this hill 13.4m of drop, which is insufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  High Street

Name:  Pt. 423.8m

OS 1:50,000 map:  90

Summit Height:  423.8m (LIDAR)

Summit Grid Reference:  NY 48057 01134 (LIDAR)

Col Height:  410.4m (LIDAR)

Col Grid Reference:  NY 48062 01452 (LIDAR)

Drop:  13.4m (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 (July 2025)

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

Rowantree Knots (NY 449 052) – Sub-Four addition (86th reclassification)

Significant Height Revisions post for Rowantree Knots

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 Rowantree Knots (NY 449 052)

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 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 Rowantree Knots, and it is adjoined to the High Street group of hills, which are situated in the English Lake District, and it is positioned with the A492 road to its west and a minor road to its south-east, and has the town of Windermere towards the south-west.

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 not listed, with subsequent interpolation giving it an estimated c 13m of drop, based on an estimated c 422m summit height and an estimated c 409m col height, with both heights based on interpolation of 10m 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.

Therefore, the addition of this hill to Sub-Four status is due to LIDAR analysis, resulting in a 425.5m summit height and a 408.9m col height, with these values giving this hill 16.5m of drop, which is sufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  High Street

Name:  Rowantree Knots

OS 1:50,000 map:  90

Summit Height:  425.5m (LIDAR)

Summit Grid Reference:  NY 44987 05234 (LIDAR)

Col Height:  408.9m (LIDAR)

Col Grid Reference:  NY 44915 05276 (LIDAR)

Drop:  16.5m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (June 2025)

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

Pt. 450.1m (NY 408 054) – Sub-Four addition (85th 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 Pt. 450.1m (NY 408 054)

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 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 listed by the point (Pt. 450.1m) notation, and it is adjoined to the High Street group of hills, which are situated in the English Lake District, and it is positioned with a minor road to its north-west, the A591 road to its south-west and the A592 road to its east, and has the town of Windermere towards the south.

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 not listed, with subsequent interpolation giving it an estimated c 13m of drop, based on an estimated c 451m summit height and an estimated c 438m col height, with both heights based on interpolation of 10m 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.

Therefore, the addition of this hill to Sub-Four status is due to LIDAR analysis, resulting in a 450.1m summit height and a 434.8m col height, with these values giving this hill 15.2m of drop, which is sufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  High Street

Name:  Pt. 450.1m

OS 1:50,000 map:  90

Summit Height:  450.1m (LIDAR)

Summit Grid Reference:  NY 40804 05492 (LIDAR)

Col Height:  434.8m (LIDAR)

Col Grid Reference:  NY 40700 05457 (LIDAR)

Drop:  15.2m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (April 2025)

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

High Wythow (SD 300 990) – Sub-Four addition (84th reclassification)

Significant Height Revisions post for High Wythow

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 High Wythow (SD 300 990)

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 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 High Wythow, and it is adjoined to the The Old Man of Coniston group of hills, which are situated in the English Lake District, and it has the A593 road to ts south-east and the village of Coniston towards the south.

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 not listed, with subsequent interpolation giving it an estimated c 10m of drop, based on an estimated c 408m summit height and an estimated c 398m col height, with both heights based on interpolation of 10m 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 High Wythow

LIDAR col image of High Wythow

Therefore, the addition of this hill to Sub-Four status is due to LIDAR analysis, resulting in a 410.0m summit height and a 394.5m col height, with these values giving this hill 15.5m of drop, which is sufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  The Old Man of Coniston

Name:  High Wythow

OS 1:50,000 map:  96, 97

Summit Height:  410.0m (LIDAR)

Summit Grid Reference:  SD 30033 99023 (LIDAR)

Col Height:  394.5m (LIDAR)

Col Grid Reference:  SD 29942 99029 (LIDAR)

Drop:  15.5m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (April 2025) 

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

Pt. 474.4m (NY 381 113) – Sub-Four exclusion (83rd reclassification)

Significant Height Revisions post for Pt. 474.4m

There has been an exclusion from 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. 474.4m (NY 381 113)

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. 474.4m) notation, and it is adjoined to the Helvellyn group of hills, which are situated in the English Lake District, and it is positioned with the A591 road to its west and the A592 road to its east, and has the village of Glenridding towards the north.

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 15m of drop, based on an estimated c 472m summit height and an estimated c 457m col height, with both heights based on interpolation of 10m contouring 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 exclusion of this hill from Sub-Four status is due to LIDAR analysis, resulting in a 474.4m summit height and a 460.9m col height, with these values giving this hill 13.5m of drop, which is insufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  Helvellyn

Name:  Pt. 474.4m

OS 1:50,000 map:  90

Summit Height:  474.4m (LIDAR)

Summit Grid Reference:  NY 38179 11348 (LIDAR)

Col Height:  460.9m (LIDAR)

Col Grid Reference:  NY 38166 11274 (LIDAR)

Drop:  13.5m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (March 2025)

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

Gowbarrow Park (NY 408 212) – Sub-Four exclusion (82nd reclassification)

There has been an exclusion from 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 Gowbarrow Park (NY 408 212)

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 Gowbarrow Park, and it is adjoined to the Helvellyn group of hills, which are situated in the English Lake District, and it is positioned with a minor road to its north, the A5091 road to its west and the A592 road to its south, and has the village of Glenridding towards the south south-west.

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 15m of drop, based on an estimated c 457m summit height based on interpolation of its uppermost 450m ring contour that appears on the Ordnance Survey 1:25,000 Explorer map and the 442m 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 455.6m summit height and a 446.7m col height, with these values giving this hill 8.9m of drop, which is insufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  Helvellyn

Name:  Gowbarrow Park

OS 1:50,000 map:  90

Summit Height:  455.6m (LIDAR)

Summit Grid Reference:  NY 40805 21228 (LIDAR)

Col Height:  446.7m (LIDAR)

Col Grid Reference:  NY 40812 21297 (LIDAR)

Drop:  8.9m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (March 2025)

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

Woodend Height (SD 156 954) – Sub-Four addition (81st reclassification)

Significant Height Revisions post for Woodend Height

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 Woodend Height (SD 156 954)

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 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 Woodend Height, and it is adjoined to the Black Combe group of hills, which are situated in the English Lake District, and it is positioned almost encircled by minor roads with the A595 road to its west, and has the village of Eskdale Green towards the north north-west.

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 14m of drop, based on the 489m summit spot height and the 475m 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 Sub-Four status is due to LIDAR analysis, resulting in a 490.3m summit height and a 475.2m col height, with these values giving this hill 15.1m of drop, which is sufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  Black Combe

Name:  Woodend Height

OS 1:50,000 map:  96

Summit Height:  490.3m (LIDAR)

Summit Grid Reference:  SD 15672 95431 (LIDAR)

Col Height:  475.2m (LIDAR)

Col Grid Reference:  SD 15715 95305 (LIDAR)

Drop:  15.1m (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 (March 2025) 

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

Lingmoor Fell (NY 306 043) – Sub-Four addition (80th 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 imae of Lingmoor Fell (NY 306 043)

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 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 Lingmoor Fell, and it is adjoined to the Scafell Pike group of hills, which are situated in the English Lake District, and it is positioned with the B5343 road to its north-east and minor roads to its west, south and east, and has the village of Chapel Stile towards the north-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 14m of drop, based on the 437m summit spot height and the 423m 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 Sub-Four status is due to LIDAR analysis, resulting in a 438.2m summit height and a 422.3m col height, with these values giving this hill 15.9m of drop, which is sufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  Scafell Pike

Name:  Lingmoor Fell

OS 1:50,000 map:  90

Summit Height:  438.2m (LIDAR)

Summit Grid Reference:  NY 30613 04350 (LIDAR)

Col Height:  422.3m (LIDAR)

Col Grid Reference:  NY 30509 04425 (LIDAR)

Drop:  15.9m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (February 2025)

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

Pt. 497.7m (NY 307 075) – Sub-Four addition (79th reclassification)

Significant Height Revisions post for Pt. 497.7m

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 Pt. 497.7m (NY 307 075)

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 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 listed by the point (Pt. 497.7m) notation, and it is adjoined to the High Raise group of hills, which are situated in the English Lake District, and it is positioned with the B5343 road to its south, and has the village of Grasmere towards the 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 not listed, with subsequent interpolation giving it an estimated c 14m of drop, based on the 500m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 486m col height, based on interpolation of 10m contouring between 480m – 490m. 

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 497.7m summit height and a 482.2m col height, with these values giving this hill 15.5m of drop, which is sufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  High Raise

Name:  Pt. 497.7m

OS 1:50,000 map:  90

Summit Height:  497.7m (LIDAR)

Summit Grid Reference:  NY 30773 07598 (LIDAR)

Col Height:  482.2m (LIDAR)

Col Grid Reference:  NY 30766 07676 (LIDAR)

Drop:  15.5m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (February 2025)

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

Pt. 443.0m (NY 307 150) – Sub-Four addition (78th 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 Pt. 443.0m (NY 307 150)

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 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 listed by the point (Pt. 443.0m) notation, and it is adjoined to the High Raise group of hills, which are situated in the English Lake District, and it is positioned with a minor road and the A591 road to its east, and has the village of Grasmere 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.

Prior to this revision this hill was not listed, with subsequent interpolation giving it an estimated c 13m of drop, based on an estimated c 442m summit height and an estimated c 429m col height, with both heights based on interpolation of 10m contouring 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 addition of this hill to Sub-Four status is due to LIDAR analysis, resulting in a 443.0m summit height and a 427.7m col height, with these values giving this hill 15.3m of drop, which is sufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  High Raise

Name:  Pt. 443.0m

OS 1:50,000 map:  90

Summit Height:  443.0m (LIDAR)

Summit Grid Reference:  NY 30794 15077 (LIDAR)

Col Height:  427.7m (LIDAR)

Col Grid Reference:  NY 30760 14990 (LIDAR)

Drop:  15.3m (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 (January 2025) 

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

Pt. 430.6m (NY 314 101) – Sub-Four addition (77th 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 Pt. 430.6m (NY 314 101)

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 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 listed by the point (Pt. 430.6m) notation, and it is adjoined to the High Raise group of hills, which are situated in the English 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 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 not listed, with subsequent interpolation giving it an estimated c 13m of drop, based on an estimated c 431m summit height and an estimated c 418m col height, with both heights based on interpolation of 10m contouring 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 addition of this hill to Sub-Four status is due to LIDAR analysis, resulting in a 430.6m summit height and a 415.1m col height, with these values giving this hill 15.5m of drop, which is sufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  High Raise

Name:  Pt. 430.6m

OS 1:50,000 map:  90

Summit Height:  430.6m (LIDAR)

Summit Grid Reference:  NY 31454 10181 (LIDAR)

Col Height:  415.1m (LIDAR)

Col Grid Reference:  NY 31376 10238 (LIDAR)

Drop:  15.5m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (January 2025)

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

Pt. 426.8m (NY 272 143) – Sub-Four addition (76th 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 Pt. 426.8m (NY 272 143)

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 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 listed by the point (Pt. 426.8m) notation, and it is adjoined to the High Raise group of hills, which are situated in the English Lake District, and it is positioned with the B5289 road to its west, and has the small community of Rosthwaite towards the west north-west.

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 not listed, with subsequent interpolation giving it an estimated c 10m of drop, based on an estimated c 427m summit height and an estimated c 417m col height, with both heights based on interpolation of 10m contouring 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 addition of this hill to Sub-Four status is due to LIDAR analysis, resulting in a 426.8m summit height and a 411.1m col height, with these values giving this hill 15.7m of drop, which is sufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  High Raise

Name:  Pt. 426.8m

OS 1:50,000 map:  89, 90

Summit Height:  426.8m (LIDAR)

Summit Grid Reference:  NY 27236 14340 (LIDAR)

Col Height:  411.1m (LIDAR)

Col Grid Reference:  NY 27236 14507 (LIDAR)

Drop:  15.7m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (January 2025)

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

Jopplety How (NY 265 163) – Sub-Four addition (75th 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 Jopplety How (NY 265 163)

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 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 Jopplety How, and it is adjoined to the High Raise group of hills, which are situated in the English Lake District, and it is positioned with the B5289 road to its west and a minor road to its east, and has the small community of Rosthwaite towards the south south-west.

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 not listed, with subsequent interpolation giving it an estimated c 9m of drop, based on an estimated c 403m summit height and an estimated c 394m col height, with both heights based on interpolation of 10m contouring 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 addition of this hill to Sub-Four status is due to LIDAR analysis, resulting in a 409.1m summit height and a 391.8m col height, with these values giving this hill 17.25m of drop, which is sufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  High Raise

Name:  Jopplety How

OS 1:50,000 map:  89, 90

Summit Height:  409.1m (LIDAR)

Summit Grid Reference:  NY 26554 16377 (LIDAR)

Col Height:  391.8m (LIDAR)

Col Grid Reference:  NY 26570 16431 (LIDAR)

Drop:  17.25m (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 (January 2025)

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

Pt. 449.7m (NY 276 176) – Sub-Four addition (74th 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 Pt. 449.7m (NY 276 176)

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 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 listed by the point (Pt. 449.7m) notation, and it is adjoined to the High Raise group of hills, which are situated in the English Lake District, and it is positioned with the A591 road to its north-east and a minor road and the B5289 road to its west, and has the small community of Rosthwaite towards the south south-west.

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 an estimated c 450m summit height and an estimated c 436m col height, with both heights based on interpolation of 10m contouring 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 addition of this hill to Sub-Four status is due to LIDAR analysis, resulting in a 449.7m summit height and a 434.5m col height, with these values giving this hill 15.2m of drop, which is sufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  High Raise

Name:  Pt. 449.7m

OS 1:50,000 map:  89, 90

Summit Height:  449.7m (LIDAR)

Summit Grid Reference:  NY 27681 17605 (LIDAR)

Col Height:  434.5m (LIDAR)

Col Grid Reference:  NY 27802 17564 (LIDAR)

Drop:  15.2m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (December 2024)

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

High Pen (NY 109 188) – Sub-Four exclusion (73rd 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 High Pen (NY 109 188)

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 Docformat 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 High Pen, and it is adjoined to the High Stile group of hills, which are situated in the English Lake District, and it is positioned with a minor road to its north, the A5086 road to its west and the B5289 road to its east, and has the hamlet of Ennerdale Bridge towards the south-west.

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 17m of drop, based on the 475m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 458m 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 exclusion of this hill from Sub-Four status is due to LIDAR analysis, resulting in a 473.9m summit height and a 459.0m col height, with these values giving this hill 14.9m of drop, which is insufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  High Stile

Name:  High Pen

OS 1:50,000 map:  89

Summit Height:  473.9m (LIDAR)

Summit Grid Reference:  NY 10997 18896 (LIDAR)

Col Height:  459.0m (LIDAR)

Col Grid Reference:  NY 11170 18952 (LIDAR)

Drop:  14.9m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (December 2024)

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

Kirk Fell (NY 172 265) – Sub-Four exclusion (72nd 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 Kirk Fell (NY 172 265)

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 Kirk Fell, and it is adjoined to the Grasmoor group of hills, which are situated in the English Lake District, and it is positioned with a minor road to its north-west, the B5292 road to its south and the A66 road to its east, and has the town of Cockermouth towards the north-west.

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 438m summit spot height that appears on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map and the 423m 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 437.4m summit height and a 422.6m col height, with these values giving this hill 14.8m of drop, which is insufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  Grasmoor

Name:  Kirk Fell

OS 1:50,000 map:  89, 90

Summit Height:  437.4m (LIDAR)

Summit Grid Reference:  NY 17283 26562 (LIDAR)

Col Height:  422.6m (LIDAR)

Col Grid Reference:  NY 17404 26612 (LIDAR)

Drop:  14.8m (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

 

Sub-Fours

 

Myrddyn Phillips and Aled Williams (December 2024)

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

Buck Fell (NY 594 906) – Sub-Four addition (71st 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 Buck Fell (NY 594 906)

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 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 Buck Fell, and it is adjoined to the Sighty Crag group of hills, which are situated in the north-east of the country close to the border with Scotland, and it is positioned with the B6357 road to its west and a minor road t0 its east, and has the village of Butteryhaugh towards the north-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 14m of drop, based on the 402m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and the 388m 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 Sub-Four status is due to LIDAR analysis, resulting in a 401.7m summit height and a 386.5m col height, with these values giving this hill 15.3m of drop, which is sufficient for it to be classified as a Sub-Four.

 

The full details for the hill are:

Group:  Sighty Crag

Name:  Buck Fell

OS 1:50,000 map:  80

Summit Height:  401.7m (LIDAR)

Summit Grid Reference:  NY 59457 90613 (LIDAR)

Col Height:  386.5m (LIDAR)

Col Grid Reference:  NY 59296 90959 (LIDAR)

Drop:  15.3m (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 (November 2024)