Bryn Melyn (SO 109 184)
There has been a Significant Height Revision to a hill listed in the Y Pedwarau initiated from a survey with the Trimble GeoXH 6000, with these details being retrospective as the survey that resulted in this height revision was conducted on the 22nd July 2014. With the criteria for Pedwar status being all Welsh hills at or above 400m and below 500m in height that have a minimum 30m of drop.
There has been a Significant Height Revision to a hill listed in the Y Pedwarau initiated from a survey with the Trimble GeoXH 6000, with these details being retrospective as the survey that resulted in this height revision was conducted on the 22nd July 2014. With the criteria for Pedwar status being all Welsh hills at or above 400m and below 500m in height that have a minimum 30m of drop.
The name of the hill is Bryn Melyn and it is situated in the Bannau
Brycheiniog (Brecon Beacons) range of hills in south Wales, with the survey of the hill conducted in the company of Mark Trengove
who had suggested the walk.
Bryn Melyn can be easily accessed from the end of a minor road above the waters of the
Talybont Reservoir which is situated in Glyn Collwn. The hill can also be accessed from its
opposing valley of Dyffryn Crawnon which gives a slightly more rewarding and lengthy
walk.
This hill's summit
height has been increased from its current Ordnance Survey map height, as prior
to the survey with the Trimble GeoXH 6000 the hill was listed with an estimated summit height of c 446m based on it having an uppermost contour ring of 440m on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer maps. Its new summit
height is 450.5m (converted to OSGM15) which is 4.6m higher than its previously estimated height and
10.5m higher than its uppermost ring contour on current Ordnance Survey maps.
The full details for the hill are:
Cardinal Hill: Pen y
Fan
Summit Height (New Height):
450.5m (converted to OSGM15)
Name: Bryn Melyn
OS 1:50,000 map: 161
Summit Grid Reference:
SO 10941 18432
Drop: 38.2m (Trimble summit and LIDAR bwlch)
Gathering data from the summit of Bryn Melyn which resulted in this hill's significant height revision |
Myrddyn Phillips and Aled Williams (August 2015)
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