Exford South Common (SS 808 374)
There has been a Summit Relocation to a hill that is listed in The Fours initiated by LIDAR analysis conducted by Aled Williams. The Fours is the title for the list of 400m hills of England and is co-authored by Myrddyn Phillips and Aled Williams with the 2nd edition of the booklet containing this list published by Mapping Mountains Publications on the 24th April 2018.
The criteria for the list that this summit relocation affects are:
English hills at or above 400m and below 500m in height that have 30m minimum drop.
The name of the hill is Exford South Common and it is situated in Region 41 South-Central England, with its Cardinal Hill being Dunkery Beacon (SS 891 415). The hill is positioned with the B 3224 road to its north and minor roads to its west and east, and has the villages of Simonsbath to the west north-west and Exford to the east north-east.
The field where the relocated summit position is situated is a part of designated open access land, and this has direct access from the end of a minor road to the west of the summit and can also be accessed from public footpaths to the south and east of the hill.
The summit area of this hill has a 412m spot height on the Ordnance Survey 1:25,000 Explorer map which is positioned at SS 80917 37526, and it was this height and its position that was given as that of the summit of this hill in the 1st edition of The Fours when published by Europeaklist in December 2013.
|Extract from the Ordnance Survey Interactive Coverage Map hosted on the Geograph website with the summit position circled|
The highest land in the uppermost 410m ring contour was analysed via LIDAR by Aled Williams. The LIDAR (Light Detection & Ranging) technique is highly accurate height data that is now freely available for much of England and Wales.
The summit height produced by LIDAR analysis is 411.5m and is positioned at SS 80885 37482, this position is not given a spot height on contemporary Ordnance Survey maps, although it is within the boundary of the uppermost 410m contour ring.
Therefore, the relocated summit position is at SS 80885 37482 and this is approximately 60 metres south-westward and importantly in a different field from where the previous listed 412m map heighted summit was given in the 1st edition of The Fours when published by Europeaklist in December 2013.
The full details for the hill are:
Cardinal Hill: Dunkery Beacon
Summit Height: 411.5m (LIDAR)
Name: Exford South Common
OS 1:50,000 map: 181
Summit Grid Reference (New Position): SS 80885 37482 (LIDAR)
Drop: 34.5m (LIDAR)
Myrddyn Phillips and Aled Williams (July 2018)