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

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

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

LIDAR image of Peathill Crag (NY 228 013)

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

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

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

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

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

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

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

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

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

 

The full details for the hill are:

Group:  Scafell Pike

Name:  Peathill Crag

OS 1:50,000 map:  89, 90

Summit Height:  402.7m (LIDAR)

Summit Grid Reference:  NY 22837 01336 (LIDAR)

Col Height:  382.3m (LIDAR)

Col Grid Reference:  NY 22964 01331 (LIDAR)

Drop:  20.4m (LIDAR)

 

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

 

The Fours

 

The Fours – 400m Sub-Four

 

The Fours – 390m Sub-Four

 

The Fours – 390m Double Sub-Four

 

Myrddyn Phillips and Aled Williams (December 2022)