Mapping Mountains – Significant Name Changes – Y Trichant – The 300m Hills of Wales

Mynydd Fynnon Wen (SN 726 793)

There has been a Significant Name Change to a hill that is listed in the Y Trichant – The 300m Hills of Wales, 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 Mynydd Fynnon Wen (SN 726 793)

The criteria for the list that this name change applies to are:

Y Trichant – The 300m Hills of Wales.  Welsh hills at or above 300m and below 400m in height that have 30m minimum drop, with an accompanying sub list entitled the Sub-Trichant with the criteria for this sub category being all Welsh hills at or above 300m and below 400m in height with 20m or more and below 30m of drop.  The list is authored by Myrddyn Phillips, with the Introduction to the list and the renaming of it appearing on Mapping Mountains on the 13^th May 2017.

Y Trichant - The 300m Hills of Wales by Myrddyn Phillips

The hill is adjoined to the Pumlumon group of hills, which are situated in the north-western part of Mid and West Wales (Region B, Sub-Region B2), and it is positioned with the A44 road to its north and the A4120 road to its south and east, and has the village of Ponterwyd towards the east north-east.

Extract from the Ordnance Survey 1:25,000 Explorer map

The hill appeared in the original Welsh 300m P30 list on Geoff Crowder’s v-g.me website under the invented and transposed name of Mynydd Pant-yr-oerfa, with an accompanying note stating; Name from buildings to the North.

Mynydd Pant-yr-oerfa

376m

SN727793

135/147

213

Name from buildings to the North

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 put the word Mynydd in front of a farm name.  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.

Since publication of these P30 lists on Geoff Crowder’s v-g.me website there have been a number of Ordnance Survey maps made available online, some of these are historic such as the series of Six-Inch maps on the National Library of Scotland website, whilst others are current and digitally updated such as the old Vector Map Local that used to be hosted on the Geograph website and which was entitled the Interactive Coverage Map, and it is the series of Six-Inch maps that name the land taking in the summit of this hill as Mynydd Fynnon Wen.

Extract from the Ordnance Survey series of Six-Inch maps

Therefore, the name this hill is now listed by in the Y Trichant – The 300m Hills of Wales is Mynydd Fynnon Wen, and this was derived from the Ordnance Survey series of Six-Inch maps.

The full details for the hill are:

Group:  Pumlumon

Name:  Mynydd Fynnon Wen

Previously Listed Name:  Mynydd Pant-yr-oerfa

OS 1:50,000 map:  135, 147

Summit Height:  376.4m (LIDAR)

Summit Grid Reference:  SN 72691 79343 & SN 72693 79347 (LIDAR)

Bwlch Height:  333.4m (LIDAR)

Bwlch Grid Reference:  SN 72591 80115 (LIDAR)

Drop:  43.0m (LIDAR)

Myrddyn Phillips (December 2020)