Thursday, 22 June 2017

Mapping Mountains – Hill Reclassifications – The Fours


The Fours – Hill Reclassifications

The Fours are the English hills at or above 400m and below 500m in height that have a minimum drop of 30m.  Accompanying the main P30 list are three sub lists; these are the 400m Sub-Four, 390m Sub-Four and 390m Double Sub-Four category’s, with their criteria detailed in the respective Change Registers that are linked in their above titles, with the Introduction to this list being linked in the above title.

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.









Mapping Mountains - Hill Reclassifications - The Fours

Haystack (NY 300 013) – 400m Sub-Four deletion (17th reclassification)


There has been a deletion from the listing of The Fours due to analysis of data on the OS Maps website, which is the recent replacement for OS Get-a-map.  The Fours is the title for the list of 400m hills of England and takes in all English hills at or above 400m and below 500m in height that have a minimum 30m of drop, the list is co-authored by Myrddyn Phillips and Aled Williams and the 2nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24th April 2018.

Accompanying the main list of The Fours are three categories of sub hills, with this hill being deleted from the 400m Sub-Fours.  The criteria for 400m Sub-Four status are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop. 
Prior to analysis of data on OS Maps this hill was listed with c 20m of drop based on the 423m summit spot height that appears on the Ordnance Survey Interactive Coverage Map hosted on the Geograph website and an estimated col height of c 403m based on col contouring at 10m intervals and between 400m – 410m on the 1:50,000 Landranger and 1:25,000 Explorer maps and col contouring at 15m intervals and between 390m – 405m on the Harvey map.

Extract from the Ordnance Survey Interactive Coverage Map hosted on the Geograph website

The name of the hill is Haystack and it is situated in the Southern Fells of the Lake District and is placed in Region 34, Section 34D with its Cardinal Hill being The Old Man of Coniston (SD 272 978).  The hill is positioned above the Greenburn Beck which is to its north-west and the Yewdale Beck which is to its south south-east and has the small community of Little Langdale towards its north-east.

As the summit of the hill is a part of designated open access land it can be approached from a number of directions with public footpaths leading toward it from stream valleys to the north-west and south south-east.

The deletion of Haystack from 400m Sub-Four status is due to the analysis of data on the OS Maps website.  This mapping gives contour intervals at 5m which has enabled the height of the col to be narrowed down when compared to the 10m contour intervals given on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer maps.  Therefore with a 423m summit spot height on the Ordnance Survey Interactive Coverage Map hosted on the Geograph website and an estimated col height of c 404m, based on col contouring on OS Maps between 400m – 405m, this hill is now listed with c 19m of drop, which is insufficient for its continued inclusion as a 400m Sub-Four.

Extract from OS Maps


The full details for the hill are:

Cardinal Hill:  The Old Man of Coniston

Summit Height:  423m

Name:  Haystack

OS 1:50,000 map:  90

Summit Grid Reference:  NY 30063 01393

Drop:  c 19m


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










Myrddyn Phillips and Aled Williams (July 2018)






Mapping Mountains - Hill Reclassifications - The Fours

Wansfell Pike (NY 394 041) – 400m Sub-Four reclassified to Four (16th reclassification)


There has been a reclassification to the listing of The Fours due to analysis of data on the OS Maps website, which is the recent replacement for OS Get-a-map, coupled with information in the OS Trig Database and LIDAR analysis of the summit.  The Fours is the title for the list of 400m hills of England and takes in all English hills at or above 400m and below 500m in height that have a minimum 30m of drop, the list is co-authored by Myrddyn Phillips and Aled Williams and the 2nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24th April 2018.

Accompanying the main list of The Fours are three categories of sub hills, with this hill being reclassified from the 400m Sub-Fours.  The criteria for 400m Sub-Four status are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop. 
Prior to analysis of data on OS Maps this hill was listed with c 26m of drop with a summit height of c 483m based on an optical survey taken from the summit area of Baystones (486.9m at NY 40312 05143) which concluded that Wansfell Pike is at least 4m lower, and an estimated col height of c 457m based on col contouring between 450m – 460m on the 1:50,000 Landranger and 1:25,000 Explorer maps.

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

The name of the hill is Wansfell Pike and it is situated in the Eastern Fells of the Lake District and is placed in Region 34, Section 34C, with its Cardinal Hill being High Street (NY 440 110).  The hill is positioned between the A 591 road and the town of Ambleside which are to its west and the A 592 road which is to its east.

The summit of the hill is a part of designated open access land and can be approached from a number of directions with public footpaths leading to its summit from the west, north and east.

The reclassification of Wansfell Pike to Four status is due to the analysis of data on the OS Maps website, coupled with information in the OS Trig Database and LIDAR analysis of the summit.  This mapping gives contour intervals at 5m which has enabled the height of the col to be narrowed down when compared to the 10m contour intervals given on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer maps.  The OS Trig Database gives a buried block with a height of 483.717m at the summit of this hill and LIDAR analysis gives a summit height of 483.7m, and with an estimated col height of c 453 – c 454, based on col contours between 450m – 455m, these values are considered sufficient to list this hill with c 30m of drop. 

Extract from OS Maps

The full details for the hill are:

Cardinal Hill:  High Street

Summit Height:  483.7m (LIDAR)

Name:  Wansfell Pike

OS 1:50,000 map:  90

Summit Grid Reference:  NY 39417 04171 (LIDAR)

Drop:  c 30m


For the additions, deletions and reclassifications to The Fours reported on Mapping Mountains since the December 2013 publication of the list by Europeaklist please consult the following Change Registers:










Myrddyn Phillips and Aled Williams (July 2018)






Mapping Mountains - Hill Reclassifications - The Fours

Little Meldrum (NY 422 227) – 400m Sub-Four deletion (15th reclassification)


There has been a deletion from the listing of The Fours due to analysis of data on the OS Maps website, which is the recent replacement for OS Get-a-map.  The Fours is the title for the list of 400m hills of England and takes in all English hills at or above 400m and below 500m in height that have a minimum 30m of drop, the list is co-authored by Myrddyn Phillips and Aled Williams and the 2nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24th April 2018.

Accompanying the main list of The Fours are three categories of sub hills, with this hill being deleted from the 400m Sub-Fours.  The criteria for 400m Sub-Four status are all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop. 
Prior to analysis of data on OS Maps this hill was listed with c 20m of drop based on the 404m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated col height of c 384m based on col contouring between 380m – 390m on the 1:50,000 Landranger and 1:25,000 Explorer maps.

Extract from the Ordnance Survey Interactive Coverage Map hosted on the Geograph website

The name of the hill is Little Meldrum and it is situated in the Eastern Fells of the Lake District and is placed in Region 34, Section 34C with its Cardinal Hill being Helvellyn (NY 342 151).  The hill is positioned above Ullswater which is to its south-east and is situated between the small communities of Matterdale End to the west north-west and Pooley Bridge to the east north-east.

As the summit of the hill is not a part of designated open access land permission to visit should be sought, for those wishing to do so it can be approached via a public footpath that skirts the summit of the hill to its south, or it can be combined with near neighbours to take in a linear ridge walk.

The deletion of Little Meldrum from 400m Sub-Four status is due to the analysis of data on the OS Maps website.  This mapping gives contour intervals at 5m which has enabled the height of the col to be narrowed down when compared to the 10m contour intervals given on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer maps.  Therefore with a 404m summit spot height on the 1:25,000 Explorer map and an estimated col height of c 388m, based on col contouring on OS Maps between 385m – 390m, this hill is now listed with c 16m of drop, which is insufficient for its continued inclusion as a 400m Sub-Four.

Extract from OS Maps

The full details for the hill are:

Cardinal Hill:  Helvellyn

Summit Height:  404m

Name:  Little Meldrum

OS 1:50,000 map:  90

Summit Grid Reference:  NY 42203 22775

Drop:  c 16m


For the additions, deletions and reclassifications to The Fours reported on Mapping Mountains since the December 2013 publication of the list by Europeaklist please consult the following Change Registers:










Myrddyn Phillips and Aled Williams (July 2018)






Mapping Mountains - Hill Reclassifications - The Fours

Silver Howe (NY 324 066) – 390m Double Sub-Four reclassified to 390m Sub-Four (14th reclassification)


There has been a reclassification to the listing of The Fours due to analysis of data on the OS Maps website, which is the recent replacement for OS Get-a-map.  The Fours is the title for the list of 400m hills of England and takes in all English hills at and above 400m and below 500m in height that have a minimum 30m of drop, the list is co-authored by Myrddyn Phillips and Aled Williams and the 2nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24th April 2018.

Accompanying the main list of The Fours are three categories of sub hills, with this hill being reclassified from a 390m Double Sub-Four to a 390m Sub-Four.  The criteria for 390m Double Sub-Four status are all English hills at or above 390m and below 400m in height that have 20m or more and below 30m of drop, with the criteria for 390m Sub-Four status being all English hills at or above 390m and below 400m in height that have 30m minimum drop.  

Prior to analysis of data on OS Maps this hill was listed with c 28m of drop based on the 395m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated col height of c 367m based on interpolation of col contouring between 360m – 370m on the 1:50,000 Landranger and 1:25,000 Explorer maps.

Extract from the Ordnance Survey Interactive Coverage Map hosted on the Geograph website

The name of the hill is Silver Howe and it is situated in the Central and Western Fells of the Lake District and is placed in Region 34, Section 34B with its Cardinal Hill being Scafell Pike (NY 215 072).  The hill is positioned above the B 5343 road which is to its south and the village of Grasmere which is to its north-east.

The summit of the hill is a part of designated open access land and can be approached from a number of directions, with public footpaths leading toward the hill from the north, east and south.

The reclassification of Silver Howe to 390m Sub-Four status is due to the analysis of data on the OS Maps website.  This mapping gives contour intervals at 5m which has enabled the interpolated height of the col to be narrowed down when compared to the 10m contour intervals given on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer maps.  Therefore with a 395m summit spot height on the 1:25,000 Explorer map and an estimated col height of c 364m, based on interpolation of col contouring on OS Maps between 360m – 365m, this hill is now listed with c 31m of drop, which is sufficient for its reclassification to 390m Sub-Four status.

Extract from OS Maps


The full details for the hill are:

Cardinal Hill:  Scafell Pike

Summit Height:  395m

Name:  Silver Howe

OS 1:50,000 map:  90

Summit Grid Reference:  NY 32478 06644

Drop:  c 31m


For the additions, deletions and reclassifications to The Fours reported on Mapping Mountains since the December 2013 publication of the list by Europeaklist please consult the following Change Registers:










Myrddyn Phillips and Aled Williams (June 2018)






Mapping Mountains - Hill Reclassifications - The Fours

Pt. 465m (NT 830 141) – 400m Sub-Four reclassified to Four (13th reclassification)


There has been a reclassification to the listing of The Fours due to analysis of data on the OS Maps website, which is the recent replacement for OS Get-a-map.  The Fours is the title for the list of 400m hills of England and takes in all English hills at and above 400m and below 500m in height that have a minimum 30m of drop, the list is co-authored by Myrddyn Phillips and Aled Williams and the 2nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24th April 2018.

Pt. 465m (NT 830 141).  Photo: Rob Woodall

Accompanying the main list of The Fours are three categories of sub hills, with this hill being reclassified from the 400m Sub-Fours.  The criteria for 400m Sub-Four status are all English hills at and above 400m and below 500m in height that have 20m or more and below 30m of drop. 
Prior to analysis of data on OS Maps this hill was listed with c 28m of drop based on the 465m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated col height of c 437m based on col contouring between 430m – 440m on the 1:50,000 Landranger and 1:25,000 Explorer maps.

Extract from the Ordnance Survey Interactive Coverage Map hosted on the Geograph website

As the authors do not know an individual name for this hill it appears listed under the point (Pt. 465m) notation and it is situated in the Scottish Border to the River Tyne area and is placed in Region 33, with its Cardinal Hill being The Cheviot (NT 909 205).  The hill is positioned between the Westhope Burn to its west and the Easthope Burn to its east and is within 600 metres of the border with Scotland which is to its north north-west.

The summit of the hill is a part of designated open access land and can be approached from the Pennine Way that follows the course of the border hereabouts or from the stream valley to its south, with other options for access following hill ridges either side of the ridge this hill is situated on.

The summit of Pt. 465m (NT 830 141).  Photo: Rob Woodall

The reclassification of Pt. 465m to Four status is due to the analysis of data on the OS Maps website.  This mapping gives contour intervals at 5m which has enabled the height of the col to be narrowed down when compared to the 10m contour intervals given on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer maps.  Therefore with a 465m summit spot height on the 1:25,000 Explorer map and an estimated col height of c 433m, based on col contouring on OS Maps between 430m – 435m, this hill is now listed with c 32m of drop, which is sufficient for its reclassification to Four status.

Extract from OS Maps


The full details for the hill are:

Cardinal Hill:  The Cheviot

Summit Height:  465m

Name:  Pt. 465m

OS 1:50,000 map:  80

Summit Grid Reference:  NT 830 141

Drop:  c 32m


For the additions, deletions and reclassifications to The Fours reported on Mapping Mountains since the December 2013 publication of the list by Europeaklist please consult the following Change Registers:










Myrddyn Phillips and Aled Williams (June 2018)






Mapping Mountains - Hill Reclassifications - The Fours

Pt. 423.7m (SX 753 768) – 400m Sub-Four addition (12th reclassification)


There has been an addition to the listing of The Fours due to LIDAR analysis conducted by Aled Williams.  The Fours is the title for the list of 400m hills of England and takes in all English hills at and above 400m and below 500m in height that have a minimum 30m of drop, the list is co-authored by Myrddyn Phillips and Aled Williams and the 2nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24th April 2018.

Accompanying the main list of The Fours are three categories of sub hills, with this hill being added to the 400m Sub-Fours.  The criteria for 400m Sub-Four status are all English hills at and above 400m and below 500m in height that have 20m and more and below 30m of drop.
  
Prior to LIDAR analysis this hill was listed with c 18m of drop based on the 422m summit spot height that appears on the Ordnance Survey Interactive Coverage Map hosted on the Geograph website and an estimated col height of c 404m based on col contouring between 400m – 410m on the 1:50,000 Landranger and 1:25,000 Explorer maps, with the col contours between 400m – 405m on OS Maps, which is the recent replacement for OS Get-a-map.

Extract from the Ordnance Survey Interactive Coverage Map hosted on the Geograph website

As the authors do not know an individual name for this hill it appears listed under the point (Pt. 423.7m) notation, and it is situated in Dartmoor which is a part of the Cornwall and Devon region that constitutes Region 40, with its Cardinal Hill being Broad Barrow (SX 705 799).  The hill is positioned between Haytor Rocks to its east north-east and Saddle Tor to its south south-west and has the B 3387 road to its south-east and the small community of Haytor Vale towards its east north-east.

As the summit of the hill is a part of designated open access land it can be approached from a number of directions, with access from car parking beside the B 3387 road to the east and south of the hill being the most convenient way of approach.

The addition of Pt. 423.7m to 400m Sub-Four status is due to LIDAR analysis conducted by Aled Williams.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.


Aled’s LIDAR analysis gives the hill the following details:

Pt. 423.7m

Summit Height:  423.7m

Summit Grid Reference:  SX 75331 76844

Col Height:  403.2m

Col Grid Reference:  SX 75484 76930

Drop:  20.5m


Therefore, the 423.7m LIDAR analysis for the summit position at SX 75331 76844 and the 403.2m LIDAR analysis for the col position at SX 75484 76930 gives this hill 20.5m of drop, which is sufficient for it to be classified as a 400m Sub-Four.


The full details for the hill are:

Cardinal Hill:  Broad Barrow

Summit Height:  423.7m (LIDAR)

Name:  Pt. 423.7m

OS 1:50,000 map:  191

Summit Grid Reference:  SX 75331 76844 (LIDAR)

Drop:  20.5m (LIDAR)


For the additions, deletions and reclassifications to The Fours reported on Mapping Mountains since the December 2013 publication of the list by Europeaklist please consult the following Change Registers:










Myrddyn Phillips and Aled Williams (June 2018)






Mapping Mountains - Hill Reclassifications - The Fours

Shovel Down (SX 658 857) – 400m Sub-Four deletion (11th reclassification)


There has been a deletion from the listing of The Fours due to LIDAR analysis conducted by Aled Williams.  The Fours is the title for the list of 400m hills of England and takes in all English hills at and above 400m and below 500m in height that have a minimum 30m of drop, the list is co-authored by Myrddyn Phillips and Aled Williams and the 2nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24th April 2018.

Accompanying the main list of The Fours are three categories of sub hills, with this hill being deleted from the 400m Sub-Fours.  The criteria for 400m Sub-Four status are all English hills at and above 400m and below 500m in height that have 20m and more and below 30m of drop. 
Prior to LIDAR analysis this hill was listed with c 21m of drop based on a 1,427ft (435.0m) summit height that appears on the Ordnance Survey 1:10,560 map and an estimated col height of c 414m based on col contouring between 410m – 420m on the 1:50,000 Landranger and 1:25,000 Explorer maps, with the col contours between 410m – 415m on OS Maps, which is the recent replacement for OS Get-a-map.

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

The name of the hill is Shovel Down and it is situated in Dartmoor which is a part of the Cornwall and Devon region that constitutes Region 40, with its Cardinal Hill being High Willhays (SX 580 892), the hill is positioned above the Fernworthy Reservoir which is to its south south-east and has the market town of Chagford to its east north-east.

As the summit of the hill is a part of designated open access land it can be approached from a number of directions, with the nearest public road giving immediate access on to the open access land being to the north north-east of the summit.

The deletion of Shovel Down from 400m Sub-Four status is due to LIDAR analysis conducted by Aled Williams.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.


Aled’s LIDAR analysis gives the hill the following details:

Shovel Down

Summit Height:  432.6m

Summit Grid Reference:  SX 65846 85742

Col Height:  413.5m

Col Grid Reference:  SX 66236 86007

Drop:  19.1m


Therefore, the 432.6m LIDAR analysis for the summit position at SX 65846 85742 and the 413.5m LIDAR analysis for the col position at SX 66236 86007 gives this hill 19.1m of drop, which is insufficient for it to retain its 400m Sub-Four status.


The full details for the hill are:

Cardinal Hill:  High Willhays

Summit Height:  432.6m (LIDAR)

Name:  Shovel Down

OS 1:50,000 map:  191

Summit Grid Reference:  SX 65846 85742 (LIDAR)

Drop:  19.1m (LIDAR)


For the additions, deletions and reclassifications to The Fours reported on Mapping Mountains since the December 2013 publication of the list by Europeaklist please consult the following Change Registers:










Myrddyn Phillips and Aled Williams (June 2018)






Mapping Mountains - Hill Reclassifications - The Fours

Merripit Hill (SX 657 803) – 400m Sub-Four deletion (10th reclassification)


There has been a deletion from the listing of The Fours due to LIDAR analysis conducted by Aled Williams.  The Fours is the title for the list of 400m hills of England and takes in all English hills at and above 400m and below 500m in height that have a minimum 30m of drop, the list is co-authored by Myrddyn Phillips and Aled Williams and the 2nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24th April 2018.

Accompanying the main list of The Fours are three categories of sub hills, with this hill being deleted from the 400m Sub-Fours.  The criteria for 400m Sub-Four status are all English hills at and above 400m and below 500m in height that have 20m and more and below 30m of drop.
  
Prior to LIDAR analysis this hill was listed with 20m of drop based on the 449m summit spot height that appears on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map and the 429m col spot height that appears on the Ordnance Survey 1:25,000 Explorer map.

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

The name of the hill is Merripit Hill and it is situated in Dartmoor which is a part of the Cornwall and Devon region that constitutes Region 40, with its Cardinal Hill being High Willhays (SX 580 892).  The hill is positioned above the B 3212 road which is a short distance to its south-east and has the small community of Postbridge to the south-west.

As the summit of the hill is a part of designated open access land it can be approached from a number of directions, with the easiest route using a track that leaves the B 3212 road to the south-east of the summit of the hill.

The deletion of Merripit Hill from 400m Sub-Four status is due to LIDAR analysis conducted by Aled Williams.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.


Aled’s LIDAR analysis gives the hill the following details:

Merripit Hill

Summit Height:  449.5m

Summit Grid Reference:  SX 65792 80384

Col Height:  429.9m

Col Grid Reference:  SX 65884 80811

Drop:  19.6m


Therefore, the 449.5m LIDAR analysis for the summit position at SX 65792 80384 and the 429.9m LIDAR analysis for the col position at SX 65884 80811 gives this hill 19.6m of drop, which is insufficient for it to retain its 400m Sub-Four status.


The full details for the hill are:

Cardinal Hill:  High Willhays

Summit Height:  449.5m (LIDAR)

Name:  Merripit Hill

OS 1:50,000 map:  191

Summit Grid Reference:  SX 65792 80384 (LIDAR)

Drop:  19.6m (LIDAR)


For the additions, deletions and reclassifications to The Fours reported on Mapping Mountains since the December 2013 publication of the list by Europeaklist please consult the following Change Registers:










Myrddyn Phillips and Aled Williams (June 2018)






Mapping Mountains - Hill Reclassifications - The Fours

High Nook (NY 120 189) – 400m Sub-Four deletion (9th reclassification)


There has been a deletion from the listing of The Fours due to LIDAR analysis conducted by Aled Williams.  The Fours is the title for the list of 400m hills of England and takes in all English hills at and above 400m and below 500m in height that have a minimum 30m of drop, the list is co-authored by Myrddyn Phillips and Aled Williams and the 2nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24th April 2018.

Accompanying the main list of The Fours are three categories of sub hills, with this hill being deleted from the 400m Sub-Fours.  The criteria for 400m Sub-Four status are all English hills at and above 400m and below 500m in height that have 20m and more and below 30m of drop. 
Prior to LIDAR analysis this hill was listed with 21m of drop based on the 488m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and the 467m col spot height that appears on the Ordnance Survey Interactive Coverage Map hosted on the Geograph website.

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

Extract from the Ordnance Survey Interactive Coverage Map hosted on the Geograph website

The name of the hill is High Nook and it is situated in the Central and Western Fells of the Lake District and is placed in Region 34, Section 34B, with its Cardinal Hill being Great Gable (NY 211 103).  The hill is positioned on the north-easterly ridge that descends from Gravel Fell and has the Highnook Beck to its north-west and the Whiteoak Beck to its east.

As the summit of the hill is a part of designated open access land it can be approached from a number of directions, with a public footpath leading toward the hill from the north, however this hill can easily be combined with adjacent hills to make an extended walk.

The deletion of High Nook from 400m Sub-Four status is due to LIDAR analysis conducted by Aled Williams.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.


Aled’s LIDAR analysis gives the hill the following details:

High Nook

Summit Height:  486.0m

Summit Grid Reference:  NY 12033 18915

Col Height:  466.1m

Col Grid Reference:  NY 11922 18855

Drop:  19.9m


LIDAR image of High Nook

Therefore, the 486.0m LIDAR analysis for the summit position at NY 12033 18915 and the 466.1m LIDAR analysis for the col position at NY 11922 18855 gives this hill 19.9m of drop, which is insufficient for it to retain its 400m Sub-Four status.


The full details for the hill are:

Cardinal Hill:  Great Gable

Summit Height:  486.0m (LIDAR)

Name:  High Nook

OS 1:50,000 map:  89

Summit Grid Reference:  NY 12033 18915 (LIDAR)

Drop:  19.9m (LIDAR)


For the additions, deletions and reclassifications to The Fours reported on Mapping Mountains since the December 2013 publication of the list by Europeaklist please consult the following Change Registers:










Myrddyn Phillips and Aled Williams (May 2018)






Mapping Mountains - Hill Reclassifications - The Fours

Knot (SD 676 940) – 400m Sub-Four deletion (8th reclassification)


There has been a deletion from the listing of The Fours due to LIDAR analysis conducted by Aled Williams.  The Fours is the title for the list of 400m hills of England and takes in all English hills at and above 400m and below 500m in height that have a minimum 30m of drop, the list is co-authored by Myrddyn Phillips and Aled Williams and the 2nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24th April 2018.

Accompanying the main list of The Fours are three categories of sub hills, with this hill being deleted from the 400m Sub-Fours.  The criteria for 400m Sub-Four status are all English hills at and above 400m and below 500m in height that have 20m and more and below 30m of drop.  

Prior to LIDAR analysis this hill was listed with c 20m of drop based on a 429m summit spot height that appears on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map and an estimated col height of c 409m based on col contouring between 400m – 410m on the 1:50,000 and 1:25,000 maps, with the col contours between 405m – 410m on OS Maps, which is the recent replacement for OS Get-a-map.

Extract from the Ordnance Survey Interactive Coverage Map hosted on the Geograph website

The name of the hill is Knot and it is situated in the Northern and Central Pennines and is placed in Region 35, Section 35A, with its Cardinal Hill being The Calf (SD 667 970).  The hill is positioned at the southern end of the Howgill Fells and has the River Rawthey to its east and the small town of Sedbergh to its south-west.

As the summit of the hill is a part of designated open access land it can be approached from a number of directions, although there is no direct access to the hill from its east, however a route toward the hill from its south south-west on public footpaths to the open access land can be devised.

The deletion of Knot from 400m Sub-Four status is due to LIDAR analysis conducted by Aled Williams.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.


Aled’s LIDAR analysis gives the hill the following details:

Knot

Summit Height:  429.5m

Summit Grid Reference:  SD 67643 94087

Col Height:  409.9m

Col Grid Reference:  SD 67445 94203

Drop:  19.7m

LIDAR image of Knot

Therefore, the 429.5m LIDAR analysis for the summit position at SD 67643 94087 and the 409.9m LIDAR analysis for the col position at SD 67445 94203 gives this hill 19.7m of drop, which is insufficient for it to retain its 400m Sub-Four status.


The full details for the hill are:

Cardinal Hill:  The Calf

Summit Height:  429.5m (LIDAR)

Name:  Knot

OS 1:50,000 map:  98

Summit Grid Reference:  SD 67643 94087 (LIDAR)

Drop:  19.7m (LIDAR)


For the additions, deletions and reclassifications to The Fours reported on Mapping Mountains since the December 2013 publication of the list by Europeaklist please consult the following Change Registers:










Myrddyn Phillips and Aled Williams (May 2018)






Mapping Mountains - Hill Reclassifications - The Fours

Pt. 430.7m (NY 308 042) – 400m Sub-Four deletion (7th reclassification)



There has been a deletion from the listing of The Fours due to LIDAR analysis conducted by Aled Williams.  The Fours is the title for the list of 400m hills of England and takes in all English hills at and above 400m and below 500m in height that have a minimum 30m of drop, the list is co-authored by Myrddyn Phillips and Aled Williams and the 2nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24th April 2018.

Accompanying the main list of The Fours are three categories of sub hills, with this hill being deleted from the 400m Sub-Fours.  The criteria for 400m Sub-Four status are all English hills at and above 400m and below 500m in height that have 20m and more and below 30m of drop.  

Prior to LIDAR analysis this hill was listed with c 20m of drop based on an estimated summit height of c 431m (hence its previously listed name of Pt. c 431m) based on a small uppermost 430m ring contour that appears on the Ordnance Survey 1:25,000 Explorer map and a 411m col height that appears on the Ordnance Survey Interactive Coverage Map hosted on the Geograph website.

As the authors do not know an individual name for this hill it appears listed under the point (Pt. 430.7m) notation and it is situated in the Central and Western Fells of the Lake District and is placed in Region 34, Section 34B, with its Cardinal Hill being Scafell Pike (NY 215 072).  The hill is positioned between Great Langdale to its north and Little Langdale to its south and has the village of Elterwater towards its east north-east.

As the summit of the hill is a part of designated open access land it can be approached from a number of directions, with access from the north-west and from the east probably being the most convenient.

The deletion of Pt. 430.7m from 400m Sub-Four status is due to LIDAR analysis conducted by Aled Williams.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.


Aled’s LIDAR analysis gives the hill the following details:


Pt. 430.7m

Summit Height:  430.7m

Summit Grid Reference:  NY 30845 04225

Col Height:  412.6m

Col Grid Reference:  NY 30755 04313

Drop:  18.1m


Therefore, the 430.7m LIDAR analysis for the summit position at NY 30845 04225 and the 412.6m LIDAR analysis for the col position at NY 30755 04313 gives this hill 18.1m of drop, which is insufficient for it to retain its 400m Sub-Four status.


The full details for the hill are:

Cardinal Hill:  Scafell Pike

Summit Height:  430.7m (LIDAR)

Name:  Pt. 430.7m

OS 1:50,000 map:  90

Summit Grid Reference:  NY 30845 04225 (LIDAR)

Drop:  18.1m (LIDAR)


For the additions, deletions and reclassifications to The Fours reported on Mapping Mountains since the December 2013 publication of the list by Europeaklist please consult the following Change Registers:










Myrddyn Phillips and Aled Williams (May 2018)






Mapping Mountains - Hill Reclassifications - The Fours

Black Hill (SD 865 662) – Four reclassified to 400m Sub-Four (6th reclassification)


There has been a reclassification to the listing of The Fours due to LIDAR analysis conducted by Aled Williams.  The Fours is the title for the list of 400m hills of England and takes in all English hills at and above 400m and below 500m in height that have a minimum 30m of drop, the list is co-authored by Myrddyn Phillips and Aled Williams and the 2nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24th April 2018.

Accompanying the main list of The Fours are three categories of sub hills, with this hill being reclassified to the 400m Sub-Fours.  The criteria for 400m Sub-Four status are all English hills at and above 400m and below 500m in height that have 20m or more and below 30m of drop. 
Prior to LIDAR analysis this hill was listed with c 30m of drop based on the 468m summit spot height that appears on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map and an estimated col height of c 438m based on col contouring between 430m – 440m on the 1:50,000 and 1:25,000 maps, with the col contours between 440m – 445m on OS Maps, which is the recent replacement for OS Get-a-map.

The name of the hill is Black Hill and it is situated in the Central Pennines and is placed in Region 35, Section 35B, with its Cardinal Hill being Pen y Ghent (SD 838 733).  The hill is positioned with Malham Tarn to its east and has the small town of Settle to its west south-west.

As the summit of the hill is a part of designated open access land it can be approached from most directions, with the nearest public footpath being to the north which gives access from a minor lane to the open access land.

The reclassification of Black Hill to 400m Sub-Four status is due to LIDAR analysis conducted by Aled Williams.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.


Aled’s LIDAR analysis gives the hill the following details:

Black Hill

Summit Height:  468.4m

Summit Grid Reference:  SD 86566 66232

Col Height:  440.2m

Col Grid Reference:  SD 86841 66039

Drop:  28.2m

LIDAR image of Black Hill

Therefore, the 468.4m LIDAR analysis for the summit position at SD 86566 66232 and the 440.2m LIDAR analysis for the col position at SD 86841 66039 gives this hill 28.2m of drop, which is insufficient for its continued status as a Four.


The full details for the hill are:

Cardinal Hill:  Pen y Ghent

Summit Height:  468.4m (LIDAR)

Name:  Black Hill

OS 1:50,000 map:  98

Summit Grid Reference:  SD 86566 66232 (LIDAR)

Drop:  28.2m (LIDAR)


For the additions, deletions and reclassifications to The Fours reported on Mapping Mountains since the December 2013 publication of the list by Europeaklist please consult the following Change Registers:










Myrddyn Phillips and Aled Williams (May 2018)






Mapping Mountains - Hill Reclassifications - The Fours

Green Hill (NY 853 533) – 400m Sub-Four reclassified to Four (5th reclassification)


There has been a reclassification to the listing of The Fours due to LIDAR analysis conducted by Aled Williams.  The Fours is the title for the list of 400m hills of England and takes in all English hills at and above 400m and below 500m in height that have a minimum 30m of drop, the list is co-authored by Myrddyn Phillips and Aled Williams and the 2nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24th April 2018.

Accompanying the main list of The Fours are three categories of sub hills, with this hill being reclassified from the 400m Sub-Fours.  The criteria for 400m Sub-Four status are all English hills at and above 400m and below 500m in height that have 20m and more and below 30m of drop. 
Prior to LIDAR analysis this hill was listed with 28m of drop based on the 419m summit spot height that appears on the Ordnance Survey 1:50,000 Landranger map and the 391m col spot height that appears on the Ordnance Survey 1:25,000 Explorer map.

The name of the hill is Green Hill and it is situated in the Northern and Central Pennines area and is placed in Region 35, Section 35A, with its Cardinal Hill being Burnhope Seat (NY 784 375).  The hill is positioned above the B 6295 road which is to its west and has the small community of Allendale Town to its north north-west.

The summit of the hill is a part of designated open access land and can be approached via bridleways from the north and the south that lead up tracks that head on to open hillside where public footpaths then lead over the open access land.

The reclassification of Green Hill to Four status is due to LIDAR analysis conducted by Aled Williams.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.


Aled’s LIDAR analysis gives the hill the following details:


Green Hill

Summit Height:  419.6m

Summit Grid Reference:  NY 85365 53384

Col Height:  389.6m

Col Grid Reference:  NY 85766 53013

Drop:  30.05m


Therefore, the 419.6m LIDAR analysis for the the summit position at NY 85365 53384 and the 389.6m LIDAR analysis for the col position at NY 85766 53013 gives this hill 30.05m of drop which is sufficient for it to be reclassified to a Four.


The full details for the hill are:

Cardinal Hill:  Burnhope Seat

Summit Height:  419.6m (LIDAR)

Name:  Green Hill

OS 1:50,000 map:  87

Summit Grid Reference:  NY 85365 53384 (LIDAR)

Drop:  30.05m (LIDAR)


For the additions, deletions and reclassifications to The Fours reported on Mapping Mountains since the December 2013 publication of the list by Europeaklist please consult the following Change Registers:










Myrddyn Phillips and Aled Williams (May 2018)







Mapping Mountains - Hill Reclassifications - The Fours

Cold Stones (SE 123 636) – 400m Sub-Four addition (4th reclassification)



There has been an addition to the listing of The Fours due to re-interpolation of Ordnance Survey map data coupled with studying Aerial maps and Google Street View.  The Fours is the title for the list of 400m hills of England and takes in all English hills at and above 400m and below 500m in height that have a minimum 30m of drop, the list is co-authored by Myrddyn Phillips and Aled Williams and the 2nd edition of the booklet containing this list was published by Mapping Mountains Publications on the 24th April 2018.

Accompanying the main list of The Fours are three categories of sub hills, with this hill being an addition to the 400m Sub-Fours.  The criteria for 400m Sub-Four status are all English hills at and above 400m and below 500m in height that have 20m or more and below 30m of drop. 
  
The name of the hill is Cold Stones and prior to this re-interpolation of data the hill was listed with c 12m of drop, based on an uppermost 400m ring contour on the Ordnance Survey 1:25,000 Explorer map and a col spot height of 391m that appears on the Ordnance Survey Interactive Coverage Map hosted on the Geograph website.

Cold Stones once qualified for Four status and the details relating to this are given on page 41 of The Fours (Europeaklist December 2013) and are reproduced below:


Cold Stones (Section 35B)
The one that got away, or more appropriately, the one that was quarried away, as Cold Stones (SE 124 639), for which the Cardinal Hill is Whernside, was once an English 400m P30.  The hill appears on the OS 1:50,000 map number 99 and with an old imperial summit height of 1,403ft (427.6m) and a col height of 391m on the OS enlarged Geograoh map.  This hill once had 36.6m of drop.  Its summit has now been quarried, leaving the hill with an approximate c 12m of drop.


Cold Stones is situated in the Central Pennines area and is placed in Region 35, Section 35B, with its Cardinal Hill being Whernside (SD 738 814).  The hill is positioned above the B 6265 road which is to its immediate north and has the small community of Greenhow to its north-west, and as the remaining high point of the hill is a part of a working quarry permission to visit should be sought.

The re-interpolation of this hill’s map data is mainly based on contours on the Ordnance Survey 1:50,000 Landranger map and comparing these against those shown on the more detailed OS Maps which has recently replaced the OS Get-a-map, with the latter showing an uppermost 415m ring contour that doubles back on itself before closely packed contours continue downward to what is now the quarried remains of where the summit of this hill once stood.  These map contours are at odds with the uppermost 400m contour shown on the Ordnance Survey 1:25,000 Explorer map, however Aerial maps and Google Street View confirm what is left of the hill is much more than the 1:25,000 map suggests.

Therefore, Cold Stones is listed with a c 417m summit height and 391m col height, with these values giving this hill c 26m of drop, which is sufficient for it to be classified as a 400m Sub-Four.


The full details for the hill are:

Cardinal Hill:  Whernside

Summit Height:  c 417m

Name:  Cold Stones

OS 1:50,000 map:  99

Summit Grid Reference:  SE 123 636

Drop:  c 26m


For the additions, deletions and reclassifications to The Fours reported on Mapping Mountains since the December 2013 publication of the list by Europeaklist please consult the following Change Registers:










Myrddyn Phillips and Aled Williams (May 2018)







Mapping Mountains - Hill Reclassifications - The Fours

Reilth Top (SO 284 881) - Four reclassified to 400m Sub-Four (3rd reclassification)

Survey post for Reilth Top


There has been a reclassification to the listing of The Fours with a Four being reclassified to the ranks of 400m Sub-Four due to a survey with the Trimble GeoXH 6000.  The 400m Sub-Fours is one of three categories of sub hills that accompany the main The Fours list, with the criteria for Four status being all English hills at or above 400m and below 500m in height with 30m minimum drop, and the criteria for 400m Sub-Four status being all English hills at or above 400m and below 500m in height with 20m or more and below 30m of drop.

The hill is situated in the Beacon Hill group with its Cardinal Hill being Cilfaesty (SO 128 840) and is placed in Region 38, Section 38A Shropshire, and is positioned with the town of Bishop’s Castle towards its east.

The hill can be ascended from its south south-west or south-east where public footpaths give access to its lower slopes; however its summit is not a part of open access land so permission to visit should be sought.

The name of the hill is Reilth Top and prior to the survey with the Trimble GeoXH 6000 and its subsequent listing as a 400m Sub-Four it was listed as a Four with c 30m of drop based on an estimated summit height of c 406m with its uppermost summit contour on Ordnance Survey 1:25,000 Explorer maps being 405m, and an estimated col height of c 376m with col contouring between 375m – 380m.

The survey with the Trimble produced a summit height of 404.6m (converted to OSGM15) and a col height of 375.6m (converted to OSGM15), with these values giving this hill 29.0m of drop, which is insufficient for it to retain its Four status.


The full details for the hill produced by the Trimble are:


Cardinal Hill:  Cilfaesty

Summit Height:  404.6m (converted to OSGM15)

Name:  Reilth Top

OS 1:50,000 map:  137

Summit Grid Reference:  SO 28458 88105

Drop:  29.0m (converted to OSGM15)


Upon receiving the above details for confirmation of this hill’s reclassification Aled analysed LIDAR data and the details produced by the Trimble and LIDAR are given below:


Summit Height: 

404.6m (converted to OSGM15) at SO 28458 88105 for Trimble

404.6m at SO 28456 88108 for LIDAR



Col Height: 

375.6m (converted to OSGM15) at SO 28861 87869 for Trimble

375.3m at SO 28880 87845 for LIDAR



Drop:

29.0m for Trimble

29.3m for LIDAR


The col position and height being used is that produced by LIDAR data.


The overall total for The Fours is now 294 hills with two reclassifications, one each to 390m Sub-Four and 400m Sub-Four status since publication of the list by Europeaklist in December 2013.

The overall total for the 400m Sub-Fours is now 155 with this reclassification being to first addition to this sub category since publication of the list by Europeaklist in December 2013.

The list of Four hills is available from the Haroldstreet website (January 2014) with all subsequent changes detailed on the Mapping Mountains site.

For the additions and reclassifications to The Fours reported on Mapping Mountains since the December 2013 publication of the list by Europeaklist please consult the following Change Registers:







Gathering data at the summit of Reilth Top - now reclassified from a Four to a 400m Sub-Four

Myrddyn Phillips and Aled Williams (April 2017)







Mapping Mountains - Hill Reclassifications - The Fours

The Cold Piece (SO 338 996) - Four reclassified to 390m Sub-Four (2nd reclassification)

Survey post for The Cold Piece

Significant Name Changes post for The Cold Piece


There has been a reclassification to the list of The Fours due to a recent survey with the Trimble GeoXH 6000.  The hill is positioned in Shropshire and situated between Corndon and the Stiperstones.

The name of the hill is The Cold Piece (SO 338 996) and it appears under its Cardinal Hill of the Stiperstones on page 24 of The Fours booklet published by Europeaklist.  It is listed with an accompanying note (note number 256) which states:

‘As the only absolute height found for the summit of this hill is 1,311ft (399.6m) from the OS 1:10,560 map, doubt is cast upon its qualification as an English 400m P30, but as current mapping has a small uppermost 400m ring contour the hill remains in the list for now’

That was prophetic!

This now brings the overall total for The Fours to 295 hills with this being the first major alteration since publication of the list by Europeaklist in December 2013.  Since publication the sub category's accompanying the main P30 list have increased by two to 227 hills with the addition of West Nab (SK 266 939) which was discovered by Ed Gradwell and now the addition of The Cold Piece.

The hill is reclassified from The Fours list and will appear in the 390m Sub-Fours in the 2nd edition that will hopefully be published by Europeaklist.  The list of The Fours is also available from the Haroldstreet website.


The full details for the hill are:

Cardinal Hill:  Stiperstones

Summit Height:  399.5m (converted to OSGM15)

Name:  The Cold Piece

OS 1:50,000 map:  137

Summit Grid Reference:  SO 338 996

Drop:  57.5m (converted to OSGM15)


The Cold Piece (SO 338 996) reclassified from a Four to a 390m Sub-Four
For details on the survey that reclassified this hill from Four to 390m Sub-Four status please click {here}


Myrddyn Phillips and Aled Williams (2014)







Mapping Mountains - Hill Reclassifications - The Fours

West Nab (SK 266 939) - 390m Double Sub-Four addition (1st reclassification)


There has been an addition to the 390m Double Sub-Four category which has recently been discovered by Ed Gradwell, with the details forwarded by his brother; George.  The hill is West Nab (SK 266 939) and it is situated in the Peak District.

390m Double Sub-Fours are sought after rarities for list compilers as they fail to qualify for the main list of The Fours on two counts; height and prominence.  The Fours is published by Europeaklist and also available in bagging tick list format from the Haroldstreet website.


The full details for the hill are:


Cardinal Hill:  Bleaklow Head

Summit Height:  395m

Name:  West Nab

OS 1:50,000 map:  110

Summit Grid Reference:  SK 266 939

Drop:  c 23m


Ed Gradwell (L) and George Gradwell (R) at the featureless highest point of West Nab (SK 266 939).  Photo: David Gradwell

Myrddyn Phillips and Aled Williams (February 2014)

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