Cae Cenfas Ucha (SN 751 118) – Welsh P15 addition
There has been an addition to the list of The Welsh P15s, with the summit height, bwlch height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips.
LIDAR image of Cae Cenfas Ucha (SN 751 118) |
The criteria for the list that this addition
applies to are:
The Welsh
P15s – Welsh hills with 15m
minimum drop, irrespective of their height, with an accompanying sub list entitled the Welsh Sub-P15s,
with the criteria for this sub category being all Welsh hills with 14m or more
and below 15m of drop. The list is authored by Myrddyn Phillips, with the
Introduction to the list appearing on Mapping Mountains on the 10th
May 2019.
The Welsh P15s by Myrddyn Phillips |
The name the hill is listed by is Cae Cenfas Ucha
and this was derived from the Tithe map, and it is adjoined to the Mynydd Du
group of hills, which are situated in the southern part of South Wales (Region B, Sub-Region B5), and it is positioned with a minor road to its west
and south, and the A4068 road to its east, and has the community of Y Gurnos
towards the south-east.
Extract from the Ordnance Survey 1:50,000 Landranger map |
When the listing that became known as The Welsh P15s was being compiled, this
hill was not included as with an uppermost 170m contour and bwlch contouring
between 160m – 170m that appear on the contemporary Ordnance Survey 1:50,000
Landranger and 1:25,000 Explorer map, it was judged not to meet the criterion
for the main P15 or the accompanying P14 sub list.
Extract from the Ordnance Survey 1:25,000 Explorer map |
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 Welsh P15
status is due to LIDAR analysis, resulting in a 182.8m summit height and a 164.5m
bwlch height, with these values giving this hill 18.3m of drop, which is
sufficient for it to be included in the main list of The Welsh P15s.
The full details for the hill are:
Group: Mynydd Du
Name: Cae Cenfas Ucha
OS 1:50,000 map: 160
Summit Height: 182.8m (LIDAR)
Summit Grid Reference: SN 75108 11870 (LIDAR)
Bwlch Height: 164.5m (LIDAR)
Bwlch Grid Reference: SN 75202 12488 (LIDAR)
Drop: 18.3m (LIDAR)
Myrddyn Phillips (May
2024)
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