Monday, 14 September 2015

Mapping Mountains – Significant Height Revisions – The Fours


Minton Hill (SO 414 919)

There has been a Significant Height Revision initiated by a survey with the Trimble GeoXH 6000 to a hill that is listed in The Fours, with these details being retrospective as the survey that resulted in this height revision was conducted on 2nd January 2015.

The criteria for Four status is all English hills at or above 400m and below 500m in height that have 30m minimum drop.  Whilst the criteria for 400m Sub-Four status is all English hills at or above 400m and below 500m in height that have 20m or more and below 30m of drop.

The name of the hill is Minton Hill and it is situated in the hills of the Long Mynd which are adjoined to the Stiperstones group of hills, with the survey being conducted on a clear and sunny winter’s day.

Minton Hill can be easily accessed from the north-west on a good tack from the high road that crosses the extended summit ridge of the Long Mynd.  Or a more satisfying walk to its summit can start from the south-east from the small community of Minton, from where the hill gets its name from.

The hill is listed as a 400m Sub-Four with 22m of drop in the 1st edition of The Fours published by Europeaklist in December 2013.  This drop value was based on the 453m summit spot height and 431m col spot height that appear on the Ordnance Survey 1:25,000 Explorer map.  The summit spot height is given to an ancient tumulus which is just one of a number of Tumuli that appear on the summits of surrounding hills.

This hill's summit height has been increased from its current Ordnance Survey 1:25,000 Explorer map height, as prior to the survey with the Trimble GeoXH 6000 the hill was listed with a summit height of 453m based on the spot height that appears on this map.  However, the result from the survey with the Trimble GeoXH 6000 gave the height of this hill’s summit as 455.4m (converted to OSGM15).

Therefore this hill’s new summit height is 455.4m (converted to OSGM15) which is 2.4m higher than its previously listed height which came from the 453m spot height on the Ordnance Survey 1:25,000 Explorer map.


The full details for the hill are:

Cardinal Hill:  Stiperstones

Summit Height (New Height):  455.4m (converted to OSGM15)

Name:  Minton Hill

OS 1:50,000 map:  137

Summit Grid Reference:  SO 41456 91920 
 
Drop:  23.3m (converted to OSGM15)


Gathering data from the summit of Minton Hill which resulted in this hill's significant height revision


Myrddyn Phillips and Aled Williams (September 2015)






No comments: