Monday, 16 July 2018

Mapping Mountains – Hill Reclassifications – The Fours


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

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)



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