Mapping Mountains – Hill Reclassifications – Y Trichant

Bwlchau Bank (SO 117 587) – Sub-Trichant reclassified to Trichant

There has been a confirmation of a Hill Reclassification to the listing of Y Trichant, with the summit height, drop and status of the hill being confirmed by a Trimble GeoXH 6000 survey which took place on the 3^rd October 2017.

The criteria for the listing this hill reclassification affects are:

Y Trichant – Welsh hills at and above 300m and below 400m in height that have 30m minimum drop, with an accompanying sub category entitled the Sub-Trichant consisting of all Welsh hills at and above 300m and below 400m in height that have 20m and more and below 30m of drop.  The list is authored by Myrddyn Phillips and the Introduction to the list and its re-naming and publication history was published on Mapping Mountains on the 13^th May 2017.

The name of the hill is Bwlchau Bank and it is adjoined to the Fforest Glud range of hills which are in the eastern part of Mid and West Wales (Region B, Sub-Region B1), and the hill is positioned between the town of Llandrindod (Llandrindod Wells) to its west north-west and the small community of Hundred House to its south.

Bwlchau Bank (SO 117 587)

The hill was listed in the sub category that accompanied the original Welsh P30 lists published on Geoff Crowder’s v-g.me website, when this sub category was standardised and drop values also added this hill was reclassified to a P30 with c 33m of drop, this value was later amended when the Ordnance Survey Interactive Coverage Map hosted on the Geograph website became available online as the bwlch was shown with a 317m spot height, which when coupled with the 348m summit spot height on the Ordnance Survey 1:25,000 Explorer map gave this hill 31m of drop.

Extract from the Ordnance Survey Interactive Coverage Map hosted on the Geograph website

As the summit of the hill is not on designated open access land permission to visit should be sought, for those wishing to do so there is easy access to the high point of the hill from its north-west, with the convenience of a minor lane giving access to a small mature conifer plantation adjacent to a field which leads to the summit.

The survey result obtained with the Trimble GeoXH 6000 produced a summit height of 348.3m (converted to OSGM15) and a bwlch height of 316.6m (converted to OSGM15), with these values giving this hill 31.6m of drop, which confirms this hill’s reclassification to Trichant status.

The full details for the hill are:

Group:  Fforest Glud

Name:  Bwlchau Bank

Summit Height:  348.3m (converted to OSGM15)

OS 1:50,000 map:  148

Summit Grid Reference:  SO 11770 58788

  

Drop:  31.6m (converted to OSGM15)

The Trimble GeoXH 6000 gathering data at the summit of Bwlchau Bank

For details on the survey that confirmed this hill’s reclassification to Trichant status

Myrddyn Phillips (December 2017)