Coed Darcy (SS 711 955)
There has been a Significant Name Change to a hill
that is listed in the 30-99m Twmpau and
which was listed in the Y Trechol – The Dominant
Hills of Wales, with the summit height, its location, the drop and status
of the hill confirmed by LIDAR analysis conducted by Myrddyn Phillips.
 |
| LIDAR summit image of Coed Darcy (SS 711 955) |
The criteria for the two listings that this name change
applies to are:
30-99m Twmpau - Welsh hills at or above 30m and below 100m in height with 30m minimum
drop, with an accompanying sub list entitled the 30-99m Sub-Twmpau with the criteria for this sub category being all
Welsh hills at or above 30m and below 100m in height with 20m or more and below
30m of drop, with the word Twmpau
being an acronym standing for thirty
welsh metre prominences and upward.
Y Trechol – The Dominant Hills of Wales – Welsh P30 hills whose
prominence equal or exceed half that of their absolute height. With the criteria for Lesser Dominant status being those additional Welsh P30 hills whose
prominence is between one third and half that of their absolute height. The list is authored by Myrddyn Phillips with
the Introduction to the start of the Mapping Mountains publication of this list
appearing on the 3rd December 2015.
The hill is adjoined to the
Fforest Fawr group of hills, which are
situated in the northern part of South Wales (Region C, Sub-Region C2), and it is positioned with the B4290 and M4 roads to
its east, and has the town of Castell-neth (Neath) towards the north-east.
The hill originally appeared in the 30-99m P30
list on Geoff Crowder’s v-g.me website under a partly transposed and invented name
of Crymlyn Oil Refinery, with an accompanying
note stating; Name from bog to the West
and oil refinery at the summit.
Crymlyn Oil Refinery
|
80c
|
170
|
165
|
Name from bog to the West and oil refinery at the summit
|
During my early hill listing I thought it
appropriate to either invent a name for a hill, or use a name that appeared
near to the summit of the hill on Ordnance Survey maps of the day. My preference was to use farm names and put Pen, Bryn
or Moel in front of them or as in
this instance transpose the name of a bog and what I presumed to be the name of
an oil refinery that was positioned on the summit of the hill. This is not a practice that I now advocate as
with time and inclination place-name data can be improved either by asking local
people or by examining historic documents, through this form of research an
appropriate name for the hill can usually be found.
 |
| Extract from the Ordnance Survey 1:25,000 Explorer map from 1998 |
 |
| Extract from the contemporary Ordnance Survey 1:25,000 Explorer map |
Since publication of these P30 lists on Geoff
Crowder’s v-g.me website the oil refinery has been dismantled and a regeneration
project is underway with 4,000 new homes planned. The area of regeneration also takes in that
of this hill and it is named Coed Darcy.
 |
| Extract from the website giving details of the Coed Darcy regeneration project |
Therefore the name this hill is now listed by in
the 30-99m Twmpau and was listed by (before
its deletion due to the hill having less than 30m of drop) in the Y Trechol – The Dominant Hills of Wales
is Coed Darcy, and this was derived from the name of the regeneration project
taking place on the hill.
The full details for the hill are:
Group: Fforest Fawr
Name: Coed Darcy
Previously Listed Name:
Crymlyn Oil Refinery
OS 1:50,000 map: 170
Summit Height: 80.4m (LIDAR)
Summit Grid Reference:
SS 71147 95565 (LIDAR)
Bwlch Height: 53.0m (LIDAR)
Bwlch Grid Reference:
SS 71330 95324 (LIDAR)
Drop: 27.4m (LIDAR)
Dominance: N/A,
insufficient drop (LIDAR)
Myrddyn Phillips (May 2019)
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