Mapping Mountains – Hill Reclassifications – Y Trichant – The 300m Hills of Wales

Pt. c 362m (SJ 205 541) – Sub-Trichant addition

There has been an addition to the list of 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 detail on contemporary maps produced from Ordnance Survey data.

The criteria for the list that this addition 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 13th May 2017.

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

The hill is being listed by the point (Pt. c 362m) notation as an appropriate name for it either through local enquiry and / or historic research has not been found by the author, and it is adjoined to the Moel y Gamelin group of hills, which are situated in the north-eastern part of North Wales (Region A, Sub-Region A2), and it is positioned with the B5430 road to its north, the B5431 road to its west and the A5104 road to its south-east, and has the village of Llanarmon-yn-Iâl towards the north-west.

When the original 300m height band of Welsh P30 hills was published on Geoff Crowder’s v-g.me website, this hill was not included in the Hills to be surveyed sub list that accompanied the main P30 list, as it was considered not to meet the criteria then used for this sub category. 

After the P30 lists were standardised, and interpolated heights and drop values also included, this hill was listed with an estimated c 24m of drop based on an estimated c 362m summit height and an estimated c 338m bwlch height, with both based on interpolation of 5m contouring that appear on the Ordnance Survey 1:25,000 Explorer map.

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

Therefore, the addition of this hill to Sub-Trichant status is due to detail on contemporary maps produced from Ordnance Survey data, resulting in an estimated c 362m summit height and an estimated c 338m bwlch height, with these values giving this hill an estimated c 24m of drop, which is sufficient for it to be classified as a Sub-Trichant.

The full details for the hill are:

Group:  Moel y Gamelin

Name:  Pt. c 362m

OS 1:50,000 map:  117

Summit Height:  c 362m (interpolation)

                                                           

Summit Grid Reference:  SJ 20561 54192 (interpolation)

Bwlch Height:  c 338m (interpolation)

Bwlch Grid Reference:  SJ 20990 54526 (interpolation)

Drop:  c 24m (interpolated summit and bwlch)

Myrddyn Phillips (December 2020)