Showing posts with label Y Pellennig - The Remotest Hills of Wales - Significant Name Changes. Show all posts
Showing posts with label Y Pellennig - The Remotest Hills of Wales - Significant Name Changes. Show all posts

Wednesday, 8 October 2025

Mapping Mountains – Significant Name Changes – 30-99m Twmpau, Y Trechol – The Dominant Hills of Wales and Y Pellennig – The Remotest Hills of Wales


Skomer (SM 726 094) 

There has been a Significant Name Change that is retrospective to a hill that is listed in the 30-99m Twmpau, Y Trechol – The Dominant Hills of Wales and Y Pellennig – The Remotest Hills of Wales, with the summit height and its location, the drop, dominance and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips.                       

LIDAR image of Skomer (SM 726 094)

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

30-99m Twmpau - Welsh hills at or above 30m and below 100m in height that have 30m minimum drop, with an accompanying sub list entitled the 30-99m Sub-Twmpau, with the criteria for this sub category being all Welsh hills at or above 30m and below 100m in height with 20m or more and below 30m of drop.  The list is authored by Myrddyn Phillips, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

30-99m Twmpau by Myrddyn Phillips

Y Trechol – The Dominant Hills of Wales – Welsh P30 hills whose prominence equal or exceed half that of their absolute height.  With the criteria for Lesser Dominant status being those additional Welsh P30 hills whose prominence is between one third and half that of their absolute height.  The list is authored by Myrddyn Phillips with the Introduction to the start of the Mapping Mountains publication of this list appearing on the 3rd December 2015, and the list is now available in its entirety on Mapping Mountains in Google Doc format. 

Y Trechol - The Dominant Hills of Wales by Myrddyn Phillips

Y Pellennig – The Remotest Hills of Wales - Welsh hills whose summit is at least 2.5km from the nearest paved public road and the hill has 15m minimum drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and is available as a downloadable e-booklet and print-booklet version on Mapping Mountains Publications with the up-to-date master list available to download on the Mapping Mountains site in Google Doc format.

Y Pellennig - The Remotest Hills of Wales by Myrddyn Phillips and Aled Williams

The hill is adjoined to the Garn Fawr group of hills, which are situated in the south-western part of South Wales (Region B, Sub-Region B1), and it is positioned with the nearest minor road on the mainland to its east, and has the town of Hwlffordd (Haverfordwest) on the mainland towards the east north-east.

When the original 30-99m height band of Welsh P30 hills compiled by Myrddyn Phillips were published on Geoff Crowder’s v-g.me website, this hill appeared under the transposed name of Gorse Hill, which is a prominent name that appears to the south of the summit on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map.  Soon afterward Myrddyn Phillips compiled the dominant and remote listings, and in these original compilations the name of Gorse Hill was also used for this hill. 

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

The listed name of this hill was subsequently revised to Pt. 79m, Skomer when the 1st edition of the Y Pellennig – The Remotest Hills of Wales was published by Europeaklist in April 2015.  With the point notation used to differentiate hills of the same name.  For hills such as this, the point notation protocol has now been dropped in favour of just using the main name.

Therefore, the name this hill is now listed by in the 30-99m Twmpau, Y Trechol – The Dominant Hills of Wales and Y Pellennig – The Remotest Hills of Wales is Skomer, and this was derived from a variety of different scaled Ordnance Survey maps. 

 

The full details for the hill are:

Group:  Garn Fawr

Name:  Skomer 

Previously Listed Name:  Gorse Hill (originally listed), Pt. 79m, Skomer (previously listed)   

OS 1:50,000 map:  157

Summit Height:  79.3m (LIDAR) 

Summit Grid Reference:  SM 72695 09460 (LIDAR)               

Bwlch Height:  N/A (sea level) 

Bwlch Grid Reference:  N/A (sea level) 

Drop:  79.3m (LIDAR) 

Dominance:  100.00% (LIDAR) 

Remoteness:  3.410km 

 

Myrddyn Phillips and Aled Williams (October 2025)

  

Friday, 23 November 2018

Mapping Mountains – Significant Name Changes – Yr Uchafion and Y Pellennig – The Remotest Hills of Wales


Craig Gwrelyg (SO 055 203)

There has been a Significant Name Change to a hill that is listed in the Yr Uchafion and Y Pellennig - The Remotest Hills of Wales, with the summit height, drop and status of the hill initially ascertained by LIDAR analysis conducted by Aled Williams and later confirmed by a Trimble GeoXH 6000 survey conducted by Myrddyn Phillips which took place on the 30th June 2018.

LIDAR image of Craig Gwrelyg

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

Yr Uchafion – Welsh hills at or above 500m in height that have 15m minimum drop.  The list is co-authored by Myrddyn Phillips and Aled Williams, with the Introduction to the list appearing on Mapping Mountains on the 4th November 2015.

Y Pellennig –The Remotest Hills of Wales - Welsh hills whose summit is at least 2.5km from the nearest paved public road and the hill has a minimum 15m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and is available as a downloadable e-booklet or print-booklet version on Mapping Mountains Publications with the up-to-date master list available on Mapping Mountains in Google Doc format.

The hill is adjoined to the Bannau Brycheiniog (Brecon Beacons) group of hills, which are situated in the South Wales Region (Region C, Sub-Region C2), and it is positioned between the towns of Aberhonddu (Brecon) towards its north and Merthyr Tudful to its south.

The hill first made an appearance in a published hill list in the 1940 edition of the Rucksack Club Journal when Ted Moss listed it as Craig Cwareli in his list entitled The Two-thousands of Wales.  The hill has since been listed by a variety of names including; Craig Pwllfa (subsid), Gwaun Cerrig Llwydion, Bwlch y Ddwyallt and Graig Fan Las.

Hill list authors are prone to list a hill by the name that appears nearest to its summit on contemporary Ordnance Survey maps, without much consideration for its local or historical confirmation, or whether map placement is appropriate, and in the case of this hill the name of Bwlch y Ddwyallt appears close to this hill’s summit on contemporary Ordnance Survey 1:25,000 Explorer maps.

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

When this hill was first included in the Yr Uchafion it was listed as Bwlch y Ddwyallt, it was only towards the end of the compilation of this list that place-name enquiries were made with local people including farmers, grazers and landowners.

One of the locals contacted in this area has his family farm to the north of this hill and gave the name of Gurelig Rocks for the cliffs to the immediate north and north-west of this hill’s summit.  This name is an anglicised version of Craig Gwrelyg with the cwm of the same name given on the Ordnance Survey One-Inch ‘Old Series’ map.

Extract from the Ordnance Survey One-Inch 'Old Series' map

The name of the cliffs to the immediate north of this hill’s summit was given this person by his father, and when asked about the name of Cwm Cwareli which appears on contemporary Ordnance Survey maps, he had never heard of it.  He also confirmed that Bwlch y Ddwyallt is the name of the bwlch between this hill and Waun Rydd (SO 062 206) and is not applicable to the hill itself.

The cliffs of Craig Gwrelyg

Therefore, the name this hill is now listed by in the Yr Uchafion and Y Pellennig – The Remotest Hills of Wales is Craig Gwrelyg and this was derived from local enquiry.


The full details for the hill are:

Group:  Bannau Brycheiniog

Name:  Craig Gwrelyg

Previously Listed Name:  Bwlch y Ddwyallt

Summit Height:  753.9m (converted to OSGM15)

OS 1:50,000 map:  160

Summit Grid Reference:  SO 05521 20383

Drop:  18.9m (converted to OSGM15)

Gathering data with the Trimble GeoXH 6000 at the summit of Craig Gwrelyg


Myrddyn Phillips and Aled Williams (November 2018)



Saturday, 21 January 2017

Mapping Mountains – Significant Name Changes – Y Pellennig - The Remotest Hills of Wales and Y Pedwarau - The 400m Hills of Wales


Esgair Cerrig (SN 952 432)

There has been a Significant Name Change to a hill that is listed in Y Pellennig - The Remotest Hills of Wales and the Y Pedwarau, with the summit height, drop and status of the hill being confirmed by a Trimble GeoXH 6000 survey which was conducted on the 28th December 2016, with the summit of the hill previously analysed via LIDAR data by Aled Williams.

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

Y Pellennig –The Remotest Hills of Wales comprise all Welsh hills whose summit is 2.5km or more from the nearest paved public road and which have a minimum 15m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams.

Y Pedwarau - These are the Welsh hills at and above 400m and below 500m in height that have 30m minimum drop.  The list is co-authored by Myrddyn Phillips and Aled Williams, with the introduction to the Mapping Mountains publication of this list appearing on the 30th January 2017.

The hill is a part of the Mynydd Epynt range, this group of hills is situated in the south-eastern part of Mid and West Wales (Region B, Sub-Region B-2), and is positioned above the small community of Llangamarch (Llangammarch Wells) to the north north-west and the small town of Llanwrtyd (Llanwrtyd Wells) to the west north-west. 

Esgair Cerrig (SN 952 432)

The hill appeared in the 400m P30 list on Geoff Crowder’s v-g.me website under the name Twyn Rhyd-car North Top, with an accompanying note stating Name from hill to the south.  Hill list authors are prone to list a hill by the name that appears nearest to its summit on Ordnance Survey maps, without much consideration for its local or historical confirmation, or whether map placement is appropriate, and when the hill is unnamed on Ordnance Survey maps list authors are prone to either invent a name for the hill, supplant a name from a near feature that can result in an inappropriate name or they can use a directional name from a near named hill, and in the case of this hill it was the latter that I opted for, using the name of Twyn Rhyd Car and adding the directional element of North Top. 


Twyn Rhyd-car North Top
  456m
  147/160
188
  Name from hill to the South

  
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 historical documents, through this form of research an appropriate name for the hill can usually be found, and in the case of this hill it was a local farmer who gave the name Esgair Cerrig for land taking in the summit of this hill.

Therefore, the name this hill is now listed by in Y Pellennig - The Remotest Hills of Wales and Y Pedwarau is Esgair Cerrig and this was derived from local enquiry.


The full details for the hill are:

Group:  Mynydd Epynt

Name:  Esgair Cerrig

Previously Listed Name:  Twyn Rhyd-car North Top 

Summit Height:  456.4m (converted to OSGM15)

OS 1:50,000 map:  147, 160

Summit Grid Reference:  SN 95224 43297 
 
Drop:  35.6m (converted to OSGM15)





Myrddyn Phillips and Aled Williams (January 2017)








Wednesday, 7 December 2016

Mapping Mountains – Significant Name Changes – Y Pellennig - The Remotest Hills of Wales, Welsh Highlands - Uchafion Cymru and 500m Twmpau


Bryn Llwyd (SN 835 920)

There has been a Significant Name Change to a hill that appears in the following listings, Y Pellennig - The Remotest Hills of Wales, Yr Uchafion and the 500m Twmpau, with the height, drop, summit relocation and status of the hill being confirmed by a survey with the Trimble GeoXH 6000 which took place on the 5th May 2016 and the 13th May 2016.

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

Y Pellennig –The Remotest Hills of Wales comprise all Welsh hills whose summit is 2.5km or more from the nearest paved public road and which have a minimum 15m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams.

Yr Uchafion - All Welsh hills at or above 500m in height that have 15m minimum drop.  The list is co-authored by Myrddyn Phillips and Aled Williams. 

500m Twmpau - All Welsh hills at or above 500m and below 600m in height with 30m minimum drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.  The list is authored by Myrddyn Phillips.  

The hill is a part of the Pumlumon range, which is an extensive group of hills in the north-western part of Mid and West Wales, and it is relatively remote for a Welsh hill with the nearest small community being Penffordd-las (Staylittle) to the east.

The Trimble GeoXH 6000 gathering data at the summit of Bryn Llwyd

The listed summit of this hill has been relocated from Bryn yr Ŵyn at SN 83919 92571 to Bryn Llwyd at SN 83574 92022, with the latter surveyed with the Trimble GeoXH 6000 as being 1.5m higher.  

The hill first made an appearance in a hill list in 1997 when John Kirk listed it as Bryn Yr Wyn, using the name of the adjacent hill but with the correct grid reference in his Kirk’s BIG Mountain List, this list that remains unpublished but available via the author.  The adjacent lower hill was later included by Michael Dewey and listed as Bryn yr Wyn in the April 2002 edition of Strider, which included the updates to The 500-Metre Tops of England and Wales list that appeared in his Mountain tables book published by Constable in 1995.  The summit of the Dewey was later relocated due to the Trimble GeoXH 6000 survey to the higher summit and listed as Esgair Greolen.

Prior to making local place-name enquiries the now known higher summit was accepted as being named Esgair Greolen, and since this summit has usurped its neighbour as being the higher, this is the name used in Michael’s list to The 500-Metre Tops of England and Wales.

Hill list authors are prone to list a hill by the name that appears nearest to its summit on contemporary Ordnance Survey maps, without much consideration for its local or historical confirmation, or whether map placement is appropriate.  However, place-name data can be improved by asking local people and examining historical documents, and on the way to survey this hill for the second time with the Trimble GeoXH 6000 I made place-name enquiries with the local farmer, who kindly took me up in his two seater quad bike toward the hill.  Afterward both Aled and I examined a number of historical maps for evidence of where the name of Esgair Greolen originated and where it is applicable to.

The local farmer I met is named Gareth Griffith and he had farmed from Nant-yr-hafod for forty years, he was out with his dogs heading up the hill to feed the sheep.  As we chatted I asked him about the names of the local hills, and he rolled off name after name of the local hills and streams, one in particular proved extremely interesting, it related to the hill that Ordnance Survey maps name as Esgair Greolen, which was the hill I wanted to concentrate the morning’s surveying activities on.  Gareth knew this hill as Bryn Llwyd, and said that ‘this name doesn’t appear on the map.’  I asked him about the name of Esgair Greolen, and he had never heard of it.

Gareth Griffith

Gareth gave me a lift up the hill on his two seater quad bike and dropped me off at the end of the track close to the forested summit of Fedw Ddu.  From this vantage point we were looking across to Bryn yr Ŵyn and also the hill I planned on prioritising to survey, and Gareth pointed toward each and named them, Bryn yr Ŵyn and Bryn Llwyd, the latter is the hill named as Esgair Greolen on contemporary Ordnance Survey maps.

When back home I examined old Ordnance Survey maps and forwarded the details of my meeting with Gareth Griffith to Aled, who proceeded to research where the name of Esgair Greolen originated and what feature this name may be applicable to.  Aled’s comments relating to this appear in the 2nd edition of Y Pellennig - The Remotest Hills of Wales, and are reproduced below:

The OS have applied the name Esgair Greolen to this hill since the 1901 Six-Inch map, however earlier OS maps provide conflicting information regarding the positions of the steams named Nant Esgair Greolen and Nant y Barcud, which casts uncertainty over the exact position of Esgair Greolen.  A single local contact failed to confirm Esgair Greolen as the name of this hill, but instead visually identified the hill as being known as Bryn Llwyd.

Extracts from a number of Ordnance Survey maps appear below giving detail relating to the name placement of Esgair Greolen and the steams of Nant Esgair Greolen and Nant y Barcud.

Extract from the Ordnance Survey One-Inch 'Old Series' map

Extract from the 1886 Ordnance Survey Six-Inch map

Extract from the 1903 Ordnance Survey Six-Inch map with the stream previously recorded as Nant y Barcud now recorded as the Nant Esgair Greolen


Extract from the Ordnance Survey 1903 Six-Inch map where the name Esgair Greolen first appeared on an Ordnance Survey map


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

As a result of this research the hill has subsequently been listed under the name of Bryn Llwyd in Y Pellennig – The Remotest Hills of Wales, Yr Uchafion and the 500m Twmpau, and this name was derived from local enquiry and does not appear on any Ordnance Survey map.


ills of Wales, and are reproduced below@
The full details for the hill are:


Group:  Pumlumon

Name:  Bryn Llwyd

Previously Listed Name:  Esgair Greolen 

Summit Height:  501.4m (converted to OSGM15 and average of four summit surveys)

OS 1:50,000 map:  135, 136

Summit Grid Reference:  SN 83574 92022 
 
Drop:  30.3m (converted to OSGM15)



For details on the 1st survey and the 2nd survey of Bryn Llwyd


Myrddyn Phillips and Aled Williams (December 2016)