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

 

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

Y Trichant - The 300m Hills of Wales are the Welsh hills at or above 300m and below 40om in height that have a minimum drop of 30m.  Accompanying the main P30 list is a sub list entitled the Sub-Trichant, with the qualification to 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, with the Introduction to the re-naming of this list and its publication history appearing on Mapping Mountains on 13th May 2017.

The list is authored by Myrddyn Phillips and the posts that have appeared on Mapping Mountains detailing the Significant Name Changes to the main P30 list and the sub list appear below presented chronologically in receding order.

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

Pt. 391.2m (SN 856 386) - 248th significant name change

 

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 Pt. 391.2m (SN 856 386)

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, and the Introduction to the Mapping Mountains publication of the list appearing on the 1^st January 2022. 

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

The hill is adjoined to the Mynydd Epynt group of hills, which are situated in the central part of South Wales (Region B, Sub-Region B1), and it is positioned with minor roads to its north and south, and the A483 road to its north-west, and has the town of Llanwrtyd towards the north north-east.

The hill appeared in the original 300m height band of Welsh P30 hills published on Geoff Crowder’s v-g.me website, under the invented and transposed name of Bryn Cefn Coch, with an accompanying note stating; Name from buildings to the North.

Bryn Cefn Coch

391m

SN857386

160

187

Height from 1985 1:50000 map. 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.  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 1:50,000 Landranger map

However, on occasion even when research is conducted an appropriate name for the hill may not be found, and on such occasions the listing protocol is to use the point (Pt. 391.2) notation, and for this hill this is such an example.

Therefore, the name this hill is now listed by in the Y Trichant – The 300m Hills of Wales is Pt. 391.2m, and this is being used as the author has not found an appropriate name for the hill either through historic research and/or local enquiry. 

 

The full details for the hill are: 

Group:  Mynydd Epynt 

Name:  Pt. 391.2m 

Previously Listed Name:  Bryn Cefn Coch 

OS 1:50,000 map:  160

Summit Height:  391.2m (LIDAR)                                                           

Summit Grid Reference:  SN 85642 38637 (LIDAR) 

Bwlch Height:  320.2m (LIDAR) 

Bwlch Grid Reference:  SN 86702 38910 (LIDAR) 

Drop:  71.0m (LIDAR) 

 

Myrddyn Phillips (April 2024)

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

Llanfilo Camp (SO 113 327) - 247th significant name change

Significant Height Revisions post for Llanfilo Camp

Summit Relocations post for Llanfilo Camp

 

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 Llanfilo Camp (SO 113 327)

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, and the Introduction to the Mapping Mountains publication of the list appearing on the 1^st January 2022. 

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

The hill is adjoined to the Mynydd Epynt group of hills, which are situated in the central part of South Wales (Region B, Sub-Region B1), and it is positioned encircled by minor roads, with the A38 road farther to its north and the B4560 road farther to its east, and has the town of Talgarth towards the east north-east.

The hill appeared in the original 300m height band of Welsh P30 hills published on Geoff Crowder’s v-g.me website, under the invented name of Pen-y-gaer, with an accompanying note stating; Name from ancient hill fort at summit.

Pen-y-gaer

310m

SO113327

161

13

Trig pillar. Name from ancient hill fort at 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 use a name that is in common usage for such ancient monuments, without confirmation of its actual use.  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

Since the original publication of the Welsh P30 lists on Geoff Crowder’s v-g.me website there have been a number of resources made available online.  One of these is Coflein; the online database for the National Monuments Record of Wales, which constitutes the national collection about the historic environment of Wales.  Coflein documents detail associated with ancient structures, including hill forts, and for this hill and its listed name it is Coflein that use the name of Llanfilo Camp.

Therefore, the name this hill is now listed by in the Y Trichant – The 300m Hills of Wales is Llanfilo Camp and this was derived from detail supplied by Coflein. 

 

The full details for the hill are: 

Group:  Mynydd Epynt 

Name:  Llanfilo Camp 

Previously Listed Name:  Pen-y-gaer 

OS 1:50,000 map:  161

Summit Height:  310.4m (LIDAR)                                                           

Summit Grid Reference:  SO 11352 32709 (LIDAR) 

Bwlch Height:  223.6m (LIDAR) 

Bwlch Grid Reference:  SO 09879 31998 (LIDAR) 

Drop:  86.8m (LIDAR) 

 

Myrddyn Phillips (April 2024) 

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

Mynydd Allt y Grug (SN 753 081) - 246th significant name change

 

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 Allt y Grug (SN 753 081)

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, and the Introduction to the Mapping Mountains publication of the list appearing on the 1^st January 2022. 

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

The hill is adjoined to the Mynydd Du group of hills, which are situated in the southern part of South Wales (Region B, Sub-Region B5), and it is positioned with a minor road to its north-west, the A474 road farther to its west, the A4067 road to its south-east and the A4068 road to its north-east, and has the town of Pontadawe towards south-west. 

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

The hill appeared in the original 300m height band of Welsh P30 hills published on Geoff Crowder’s v-g.me website as a twin listed top with the prioritised name given as Tarren y Gigfran, although both this and that of Mynydd Allt-y-grug were given as twin names.

Tarren y Gigfran/ Mynydd Allt-y-grug

338m

SN753081

160

12/165

Two tops of same height - other at SN750079.

Since the original publication of the Welsh P30 lists on Geoff Crowder’s v-g.me website 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 prioritise the name of Mynydd Allt y Grug for this hill, with that of Tarren y Gigfran positioned against a small escarpment edge and therefore a feature name, rather than a hill name.

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 Allt y Grug and this was derived from contemporary Ordnance Survey maps and priority status of the name ascertained from the Ordnance Survey series of Six-Inch maps. 

 

The full details for the hill are: 

Group:  Mynydd Du 

Name:  Mynydd Allt y Grug 

Previously Listed Name:  Tarren y Gigfran/Mynydd Allt-y-grug 

OS 1:50,000 map:  160

Summit Height:  338.8m (LIDAR)                                                           

Summit Grid Reference:  SN 75325 08135 (LIDAR) 

Bwlch Height:  148.4m (LIDAR) 

Bwlch Grid Reference:  SN 75768 10169 & SN 75783 10170 (LIDAR) 

Drop:  190.4m (LIDAR) 

 

Myrddyn Phillips (April 2024)