Mapping Mountains – Significant Name Changes – Y Pedwarau – The 400m Hills of Wales

Lower House Bank (SO 142 790)

There has been a Significant Name Change to a hill listed in the Y Pedwarau – The 400m 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 Lower House Bank (SO 142 790) 

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

Y Pedwarau – The 400m Hills of Wales.  Welsh hills at or above 400m and below 500m in height that have 30m minimum drop, accompanying the main list are five categories of sub hills; 500m Sub-Pedwarau, 500m Double Sub-Pedwarau, 400m Sub-Pedwarau, 390m Sub-Pedwarau and the 390m Double Sub-Pedwarau.  The list is co-authored by Myrddyn Phillips and Aled Williams and is published on Mapping Mountains in Google Doc format.

Y Pedwarau - The 400m Hills of Wales by Myrddyn Phillips and Aled Williams

The hill is adjoined to the Beacon Hill group of hills, which are situated in the north-eastern part of South Wales (Region B, Sub-Region B2), and it is positioned with the B4355 road to its east and north, the A483 road to its west and the B4356 to its south, and has the village of Felindre towards the north-east and the village of Llanbadarn Fynydd towards the west south-west.

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

The hill appeared in the original Welsh 400m P30 list compiled by Myrddyn Phillips on Geoff Crowder’s v-g.me website under the name of Ty’n-y-ddôl Hill, which is a prominent name that appears beside the summit of this hill on the contemporary Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map.  This is also the name the hill was listed by in the 1^st edition of the Y Pedwarau co-authored by Myrddyn Phillips and Aled Williams and published by Europeaklist in May 2013.

Ty'n-y-ddol Hill

484m

SO142790

136/148

214

Since the original compilation of this list there have been a number of 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 were digitally updated such as the Ordnance Survey Vector Map Local that was hosted on the Geograph website and which was entitled the Interactive Coverage Map, whilst others are current and digitally updated such as the interactive mapping on the Magic Maps and WalkLakes websites, and it is the series of Ordnance Survey Six-Inch maps that form the basis of the change in the listed name of this hill.

The Ordnance Survey series of Six-Inch maps formed the base map Ordnance Survey used for many decades leading to the production of the 1:10,000 Series of maps, both have now been superseded by the digitised Master Map.  The series of Six-Inch maps are excellent for name placement and especially so compared to the contemporary Ordnance Survey 1:25,000 Explorer map, and it is the series of Six-Inch maps that name the area taking in the summit of this hill as Lower House Bank, with this name being substantiated on the 1857 Enclosure Map, and in use on the contemporary Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map, with the name of Ty’n y Ddôl Hill applicable to adjacent land to the north of the summit of this hill.

Extract from the Ordnance Survey series of Six-Inch maps

Therefore, the name this hill is now listed by in the Y Pedwarau – The 400m Hills of Wales is Lower House Bank and this was derived from the Ordnance Survey series of Six-Inch maps and substantiated by the 1857 Enclosure Map, as well as appearing on the contemporary Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map.

The full details for the hill are:

Group:  Beacon Hill

Name:  Lower House Bank

Previously Listed Name:  Ty’n-y-ddôl Hill

OS 1:50,000 map:  136, 148

Summit Height:  481.6m (LIDAR)

Summit Grid Reference:  SO 14233 79025 (LIDAR)

Bwlch Height:  431.7m (LIDAR)

Bwlch Grid Reference:  SO 12634 79971 (LIDAR)

Drop:  49.8m (LIDAR)

Myrddyn Phillips and Aled Williams (November 2019)