Cae Bonc (SJ 129 121)
There has been a Significant Name Change to a hill that is listed in The Welsh P15s, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips.
Cae Bonc (SJ 129 121) |
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 |
When the listing that became known as The Welsh P15s was being compiled, this hill was listed under the point (Pt. 145m) notation with 20m of drop, based on the 145m summit spot height and the 125m bwlch spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Y Berwyn
Name: Cae Bonc
Previously Listed Name: Pt. 145m
OS 1:50,000 map: 125
Summit Height: 144.8m
(converted to OSGM15, Trimble GeoXH 6000)
Summit Grid Reference:
SJ
12918 12172 (Trimble GeoXH 6000)
Bwlch Height:
124.9m (LIDAR)
Bwlch Grid Reference:
SJ 12993 12315 (LIDAR)
Drop: 19.8m (Trimble GeoXH 6000 summit and LIDAR bwlch)
Myrddyn Phillips (July
2021)
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