Saturday, 26 October 2024

Mapping Mountains - Significant Name Changes - 30-99m Twmpau

 

30-99m Twmpau – Significant Name Changes

The 30-99m Twmpau (thirty welsh metre prominences and upward) are the Welsh hills at or above 30m and below 100m in height that have a minimum drop of 30m.  Accompanying the main P30 list is a sub list entitled the 30-99m Sub-Twmpau with the qualification to 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 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 - 30-99m Twmpau

Skomer (SM 726 094) - 121st significant name change

 

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 (October 2025)




Mapping Mountains - Significant Name Changes - 30-99m Twmpau

Penpontbren Mochno (SN 630 925) - 120th significant name change

Hill Reclassifications post for Penpontbren Mochno

 

There has been a Significant Name Change to a hill that is listed in the 30-99m Twmpau, 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 Penpontbren Mochno (SN 630 925)

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

30-99m Twmpau - Welsh hills at or above 30m and below 100m in height with 30m minimum drop, this height band of hills has two accompanying sub lists, the first of which is 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, and the second sub category is entitled the Double Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 20m and below 30m 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

The hill is adjoined to the Banc Llechwedd Mawr group of hills, which are situated in the northern part of South Wales (Region B, Sub-Region B1), and it is positioned with the B4353 road to its north and west, and the A487 road to its east, and has the small community of Borth towards the south south-west.

When the original 30-99m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website, this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category.

After the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-evaluated and it was listed under the point (Pt. 26m) notation with 24m of drop, based on the 26m summit spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map and the 2m bwlch spot height that appears on the Ordnance Survey 1:25,000 Explorer map. 

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

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 362 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as a part of the farm of Penpontbren Mochno in the apportionments, with the details on the Tithe map appearing in the parish named as Llangynfelyn and in the county named as Cardigan. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 30-99m Twmpau is Penpontbren Mochno, with this was derived from the Tithe map. 

 

The full details for the hill are:

Group:  Banc Llechwedd Mawr

Name:  Penpontbren Mochno

Previously Listed Name:  Pt. 26m 

OS 1:50,000 map:  135

Summit Height:  26.9m (LIDAR) 

Summit Grid Reference:  SN 63095 92547 (LIDAR)               

Bwlch Height:  2.0m (LIDAR) 

Bwlch Grid Reference:  SN 62775 92295 (LIDAR) 

Drop:  24.8m (LIDAR) 

 

Myrddyn Phillips (September 2025)




Mapping Mountains - Significant Name Changes - 30-99m Twmpau

Yr Ynys (SN 614 896) - 119th significant name change

Hill Reclassifications post for Yr Ynys

Significant Height Revisions post for Yr Ynys

 

There has been a Significant Name Change to a hill that is listed in the 30-99m Twmpau, 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 Yr Ynys (SN 614 896)

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

30-99m Twmpau - Welsh hills at or above 30m and below 100m in height with 30m minimum drop, this height band of hills has two accompanying sub lists, the first of which is 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, and the second sub category is entitled the Double Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 20m and below 30m 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

The hill is adjoined to the Banc Llechwedd Mawr group of hills, which are situated in the northern part of South Wales (Region B, Sub-Region B1), and it is positioned with a minor road and the B4353 road to its west, and has the small community of Borth towards the south-west. 

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

When the original 30-99m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website, this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category, as with no contours on the Ordnance Survey 1:25,000 Explorer map it was difficult to know whether any hill of note existed.  However, although details for this list were initially taken from the 1:25,000 series of mapping the Ordnance Survey 1:50,000 Landranger map does have a 20m uppermost ring contour for this hill and it was subsequently listed under the point (Pt. c 22m) notation. 

Extract from the Ordnance Survey 1:50,000 Landranger map

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales.

Extract from the Tithe map
 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 123 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Yr Ynys in the apportionments, with the details on the Tithe map appearing in the parish named as Llanfihangel Genau’r Glyn and in the county named as Cardigan. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 30-99m Twmpau is Yr Ynys, with this was derived from the Tithe map. 

 

The full details for the hill are:

Group:  Banc Llechwedd Mawr

Name:  Yr Ynys

Previously Listed Name:  Pt. c 22m 

OS 1:50,000 map:  135

Summit Height:  25.45m (LIDAR) 

Summit Grid Reference:  SN 61402 89639 (LIDAR)               

Bwlch Height:  3.0m (LIDAR) 

Bwlch Grid Reference:  SN 61317 89488 & SN 61319 89492 (LIDAR) 

Drop:  22.4m (LIDAR) 

 

Myrddyn Phillips (August 2025)




Mapping Mountains - Significant Name Changes - 30-99m Twmpau

Llein (SN 629 876) - 118th significant name change

Hill Reclassifications post for Llein

 

There has been a Significant Name Change to a hill that is listed in the 30-99m Twmpau, 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 Llein (SN 629 876)

The criteria for the list 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

The hill is adjoined to the Banc Llechwedd Mawr group of hills, which are situated in the northern part of South Wales (Region B, Sub-Region B1), and it is positioned with minor roads to its north and south, the B4353 road to its west and the A487 road to its east, and has the small community of Y Borth towards the west north-west.

When the original 30-99m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website, this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category.

After the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-evaluated and it was listed under the point (Pt. 76m) notation with an estimated c 21m of drop, based on the 76m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 55m bwlch height, based on interpolation of 10m contouring between 50m – 60m. 

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

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 615 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Llein in the apportionments, with the details on the Tithe map appearing in the parish named as Llanfihangel Genau’r Glyn and in the county named as Cardigan. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 30-99m Twmpau is Llein, with this was derived from the Tithe map. 

 

The full details for the hill are:

Group:  Banc Llechwedd Mawr

Name:  Llein

Previously Listed Name:  Pt. 76m 

OS 1:50,000 map:  135

Summit Height:  76.1m (LIDAR) 

Summit Grid Reference:  SN 62972 87653 (LIDAR)               

Bwlch Height:  51.7m (LIDAR) 

Bwlch Grid Reference:  SN 63402 87483 & SN 63405 87481 (LIDAR) 

Drop:  24.5m (LIDAR) 

 

Myrddyn Phillips (July 2025)




Mapping Mountains - Significant Name Changes - 30-99m Twmpau

Moel Coed Helen (SH 475 623) - 117th significant name change

Hill Reclassifications post for Moel Coed Helen

 

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

LIDAR image of Moel Coed Helen (SH 475 623)

The criteria for the two 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

The hill is adjoined to the Yr Wyddfa group of hills, which are situated in the north-western part of North Wales (Region A, Sub-Region A1), and it is positioned with a minor road to its north, west and east, and the A487 road to its east, and has the town of Caernarfon towards the north-east.

When the original 30-99m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website, this hill appeared under the transposed name of Coed Helen, which is a prominent name that appears adjacent to this hill on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map.


Coed Helen48mSH476624114/11517/263


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, with little consideration for the meaning of the name and where it was appropriately applied to.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose a prominent name that appears adjacent to the hill on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map.  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

The listed name of this hill is referenced in a number of sources, including Baner ac Amserau Cymru, 1861 as 'Golygfa O Ben Moel Coed Helen' and Y Tyst a'r Dydd, 1875 as 'Foel Coed Helen' and Y Brython, 1915 as 'Rwyn cofio Moel Coed Helen a'r Twtil mawr ei fri'.

Therefore, the name this hill is now listed by in the 30-99m Twmpau and Y Trechol – The Dominant Hills of Wales is Moel Coed Helen, and this was derived from a number of sources, including the ones listed above. 

 

The full details for the hill are:

Group:  Yr Wyddfa

Name:  Moel Coed Helen 

Previously Listed Name:  Coed Helen   

OS 1:50,000 map:  114, 115

Summit Height:  48.5m (LIDAR) 

Summit Grid Reference:  SH 47595 62389 (LIDAR)               

Bwlch Height:  17.1m (LIDAR) 

Bwlch Grid Reference:  SH 47721 62272 (LIDAR) 

Drop:  31.3m (LIDAR) 

Dominance:  64.63% (LIDAR) 

 

My thanks to Aled Williams for advise relating to the listed name of this hill

Myrddyn Phillips (June 2025) 




Mapping Mountains - Significant Name Changes - 30-99m Twmpau

Ponciau (SH 468 609) - 116th significant name change

Hill Reclassifications post for Ponciau

Summit Relocations post for Ponciau

 

There has been a Significant Name Change to a hill that is listed in the 30-99m Twmpau, 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 Ponciau (SH 468 609)

The criteria for the list 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

The hill is adjoined to the Yr Wyddfa group of hills, which are situated in the north-western part of North Wales (Region A, Sub-Region A1), and it is positioned encircled by minor roads, with the A487 road farther to its south-east, and has the town of Caernarfon towards the north-east.

When the original 30-99m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website, this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category.

After the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-evaluated and it was listed under the point (Pt. c 47m) notation with an estimated c 24m of drop, based on an estimated c 47m twin summit height which was listed at SH 46498 60772 and SH 46820 60936 and an estimated c 23m bwlch height, with both heights based on interpolation of 5m contouring. 

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

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 162 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Ponciau in the apportionments, with the details on the Tithe map appearing in the parish named as Llanfaglan and in the county named as Caernarfonshire. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 30-99m Twmpau is Ponciau, with this was derived from the Tithe map. 

 

The full details for the hill are:

Group:  Yr Wyddfa

Name:  Ponciau

Previously Listed Name:  Pt. c 47m 

OS 1:50,000 map:  114, 115

Summit Height:  46.7m (LIDAR) 

Summit Grid Reference:  SH 46811 60944 (LIDAR)               

Bwlch Height:  22.7m (LIDAR) 

Bwlch Grid Reference:  SH 47971 61205 (LIDAR) 

Drop:  24.0m (LIDAR) 

 

Myrddyn Phillips (April 2025) 




Mapping Mountains - Significant Name Changes - 30-99m Twmpau

Rhos Uchaf (SH 593 699) - 115th significant name change

Hill Reclassifications post for Rhos Uchaf

Summit Relocations post for Rhos Uchaf

 

There has been a Significant Name Change to a hill that is listed in the 30-99m Twmpau, 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 Rhos Uchaf (SH 593 699)

The criteria for the list 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

The hill is adjoined to the Glyder Fawr group of hills, which are situated in the north-western part of North Wales (Region A, Sub-Region A1), and it is positioned with the A5 road to its immediate west and the A55 road to its south-east, and has the city of Bangor towards the north-west.

When the original 30-99m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website, this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category.

After the sub list was standardised, and interpolated heights and drop values also included this hill was still not listed, with its details subsequently documented under the point (Pt. c 93m) notation with an estimated c 16m of drop, based on an estimated c 93m summit height and an estimated c 77m bwlch height, with both heights based on interpolation of 5m contouring. 

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

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 85 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Rhos Uchaf in the apportionments, with the details on the Tithe map appearing in the parish named as Llandygái and in the county named as Caernarfon. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 30-99m Twmpau is Rhos Uchaf, with this was derived from the Tithe map. 

 

The full details for the hill are:

Group:  Glyder Fawr

Name:  Rhos Uchaf

Previously Listed Name:  Pt. c 93m 

OS 1:50,000 map:  114, 115

Summit Height:  92.5m (LIDAR) 

Summit Grid Reference:  SH 59332 69923 (LIDAR)               

Bwlch Height:  71.8m (LIDAR) 

Bwlch Grid Reference:  SH 59236 69468 (LIDAR) 

Drop:  20.7m (LIDAR)

 

Myrddyn Phillips (April 2025)




Mapping Mountains - Significant Name Changes - 30-99m Twmpau

Parc Penrhyn (SH 601 720) - 114th significant name change

Hill Reclassifications post for Parc Penrhyn

Significant Height Revisions post for Parc Penrhyn

 

There has been a Significant Name Change to a hill that is listed in the 30-99m Twmpau, 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 Parc Penrhyn (SH 601 720)

The criteria for the list 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

The hill is adjoined to the Glyder Fawr group of hills, which are situated in the north-western part of North Wales (Region A, Sub-Region A1), and it is positioned with the A5 road to its west and the A55 road to its south-east, and has the city of Bangor towards the west.

When the original 30-99m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website, this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category.

After the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-evaluated and it was listed under the transposed name of Penrhyn Castle, which is a prominent name that appears adjacent to the summit of this hill on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map, with the land where the castle is situated named as Penrhyn Park on the 1:25,000 Explorer map.  With its numerical details given as an estimated c 19m of drop, based on an estimated c 53m summit height and an estimated c 34m bwlch height, with both heights based on interpolation of 10m contouring. 

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

The intricacies of language and prioritising one in favour of another for listing a hill is fraught with complication, with originating Cymraeg names being anglicised and also originating English names being cymricised, examples such as these are more common in border country and especially so for anglicised forms.  There is no steadfast rule that fits all, but as a standard a name that has its origins in the Welsh language and where this is substantiated by either historic documentation and/or contemporary usage should be prioritised in favour of a contemporary anglicised or English version of the name.  Likewise, if a name exists where an element of it is in English and if this name applies to a hill that is situated in a Welsh speaking part of Wales it is standard practice to use a full Welsh term for the name.  It is also standard practice to use a Welsh name for a hill if another name exists that has originated in a different language.

Therefore, the name this hill is now listed by in the 30-99m Twmpau is Parc Penrhyn, with this name prioritised over the mixed language name favoured on the contemporary Ordnance Survey 1:25,000 Explorer map and the land name favoured over that of the castle name. 

 

The full details for the hill are:

Group:  Glyder Fawr

Name:  Parc Penrhyn

Previously Listed Name:  Penrhyn Castle 

OS 1:50,000 map:  115

Summit Height:  56.5m (LIDAR) 

Summit Grid Reference:  SH 60179 72091 (LIDAR)               

Bwlch Height:  31.5m (LIDAR) 

Bwlch Grid Reference:  SH 60168 71662 (LIDAR) 

Drop:  25.1m (LIDAR) 

 

Myrddyn Phillips (March 2025)




Mapping Mountains - Significant Name Changes - 30-99m Twmpau

Belan Bank (SJ 318 157) - 113th significant name change

Hill Reclassifications post for Belan Bank

 

There has been a Significant Name Change to a hill that is now listed in the 30-99m Twmpau, 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 Belan Bank (SJ 318 157)

The criteria for the list 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, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.

30-99m Twmpau by Myrddyn Phillips

The hill is adjoined to the Stiperstones 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 Afon Hafren (River Severn) to its north and the B4393 road to its south, and has the small community of Crew Green towards the south-east.

When the original 30-99m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website, this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category.

After the sub list was standardised, and interpolated heights and drop values also included this hill was still not listed, with its details subsequently documented under the point (Pt. c 83m) notation with an estimated c 17m of drop, based on an estimated c 83m summit height and an estimated c 66m bwlch height, with both heights based on interpolation of 10m contouring. 

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 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 in conjunction with the Tithe map that form the basis of the change in the listed name of this hill. 

Extract from the Ordnance Survey series of Six-Inch maps

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 position the name of Belan Bank adjacent to land where the summit of this hill is situated.

Extract from the Tithe map

As the summit of this hill comprises bounded land the details for it were also examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the apportionments

The enclosed land where the summit of this hill is situated is given the number 409 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Belan Bank in the apportionments, with the details on the Tithe map appearing in the parish of Alberbury and in the county named as Montgomery.

Therefore, the name this hill is now listed by in the 30-99m Twmpau is Belan Bank, and this was derived from the Ordnance Survey series of Six-Inch maps and the Tithe map. 

 

The full details for the hill are:

Group:  Stiperstones

Name:  Belan Bank

Previously Listed Name:  Pt. c 83m   

OS 1:50,000 map:  126

Summit Height:  82.7m (LIDAR) 

Summit Grid Reference:  SJ 31880 15779 (LIDAR)               

Bwlch Height:  60.9m (LIDAR) 

Bwlch Grid Reference:  SJ 32051 15734 (LIDAR) 

Drop:  21.9m (LIDAR) 

 

Myrddyn Phillips (February 2025) 




Mapping Mountains - Significant Name Changes - 30-99m Twmpau

Top Maes Cefn (SN 689 994) - 112th significant name change

 

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

LIDAR image of Top Maes Cefn (SN 689 994)

The criteria for the two 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, 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

The hill is adjoined to the Tarren y Gesail group of hills, which are situated in the south-western part of North Wales (Region A, Sub-Region A3), and it is positioned with a minor road and the A493 road to its north-west, and the A487 road to its south-east, and has the town of Machynlleth towards the east.

When the original 30-99m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website, this hill appeared under the transposed and invented name of Penmaen Mawr, with an accompanying note stating; Name from Penmaen Bach to the West.


Penmaen Mawr96mSN68999413523Name from Penmaen Bach to the west


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 transpose the name of a farm and substitute the word Bach for the word Mawr and use it for that of the hill.  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

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 64 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Top Maes Cefn in the apportionments, with the details on the Tithe map appearing in the parish of Tywyn and in the county named as Merioneth. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 30-99m Twmpau and Y Trechol – The Dominant Hills of Wales is Top Maes Cefn, and this was derived from the Tithe map. 

 

The full details for the hill are:

Group:  Tarren y Gesail

Name:  Top Maes Cefn

Previously Listed Name:  Penmaen Mawr   

OS 1:50,000 map:  135

Summit Height:  95.9m (LIDAR) 

Summit Grid Reference:  SN 68953 99442 (LIDAR) 

Bwlch Height:  23.5m (LIDAR) 

Bwlch Grid Reference:  SN 68786 99875 (LIDAR) 

Drop:  72.5m (LIDAR) 

Dominance:  75.54% (LIDAR) 

 

Myrddyn Phillips (January 2025)

 



Mapping Mountains - Significant Name Changes - 30-99m Twmpau

Coed Issa (SN 681 990) - 111th significant name change

 

There has been a Significant Name Change to a hill that is listed in the 30-99m Twmpau, 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 Coed Issa (SN 681 990)

The criteria for the list 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, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.

30-99m Twmpau by Myrddyn Phillips

The hill is adjoined to the Tarren y Gesail group of hills, which are situated in the south-western part of North Wales (Region A, Sub-Region A3), and it is positioned with the A493 road to its west and a minor road to its east, and has the town of Machynlleth towards the east north-east.

When the original 30-99m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website, this hill was included in the Hills to be surveyed sub list under the transposed name of Penmaen Bach, which is a prominent name appearing adjacent to the hill on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map.


Penmaen Bach50cSN68299113523Three points of same height


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 transpose the name of a farm and use it for that of the hill.  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

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 112 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Coed Issa in the apportionments, with the details on the Tithe map appearing in the parish of Tywyn and in the county named as Merioneth. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 30-99m Twmpau is Coed Issa, and this was derived from the Tithe map. 

 

The full details for the hill are:

Group:  Tarren y Gesail

Name:  Coed Issa

Previously Listed Name:  Penmaen Bach 

OS 1:50,000 map:  135

Summit Height:  53.2m (LIDAR) 

Summit Grid Reference:  SN 68145 99017 (LIDAR)               

Bwlch Height:  28.2m (LIDAR) 

Bwlch Grid Reference:  SN 68129 99337 (LIDAR) 

Drop:  24.9m (LIDAR) 

 

Myrddyn Phillips (January 2025)




Mapping Mountains - Significant Name Changes - 30-99m Twmpau

Ynys Ucha (SN 687 981) - 110th significant name change

 

There has been a Significant Name Change to a hill that is listed in the 30-99m Twmpau, 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 Ynys Ucha (SN 687 981)

The criteria for the list 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, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.

30-99m Twmpau by Myrddyn Phillips

The hill is adjoined to the Tarren y Gesail group of hills, which are situated in the south-western part of North Wales (Region A, Sub-Region A3), and it is positioned with a minor road to its north, the A493 road to its west and the A487 road to its east, and has the town of Machynlleth towards the east north-east.

When the original 30-99m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website, this hill was included in the Hills to be surveyed sub list under the transposed name of Ynys, which is a prominent name appearing adjacent to the hill on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map.


Ynys30cSN68798113523


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 transpose the name of a farm and use it for that of the hill.  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

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 46 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Ynys Ucha in the apportionments, with the details on the Tithe map appearing in the parish of Tywyn and in the county named as Merioneth.

Extract from the apportionments

Therefore, the name this hill is now listed by in the 30-99m Twmpau is Ynys Ucha, and this was derived from the Tithe map.


The full details for the hill are:

Group:  Tarren y Gesail

Name:  Ynys Ucha

Previously Listed Name:  Ynys 

OS 1:50,000 map:  135

Summit Height:  30.1m (LIDAR) 

Summit Grid Reference:  SN 68719 98147 (LIDAR)               

Bwlch Height:  4.8m (LIDAR) 

Bwlch Grid Reference:  SN 68746 98316 (LIDAR) 

Drop:  25.25m (LIDAR) 

 

Myrddyn Phillips (January 2025)  




Mapping Mountains - Significant Name Changes - 30-99m Twmpau

Cae Ynys Edwin (SN 678 963) - 109th significant name change

Hill Reclassifications post for Cae Ynys Edwin

Significant Height Revisions post for Cae Ynys Edwin

 

There has been a Significant Name Change to a hill that is listed in the 30-99m Twmpau, 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 Cae Ynys Edwin (SN 678 963)

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

30-99m Twmpau - Welsh hills at or above 30m and below 100m in height with 30m minimum drop, this height band of hills has two accompanying sub lists, the first of which is 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, and the second sub category is entitled the Double Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 20m and below 30m 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

The hill is adjoined to the Banc Llechwedd Mawr group of hills, which are situated in the northern part of South Wales (Region B, Sub-Region B1), and it is positioned with a minor road to its immediate south-east and the A487 road farther to its south-east, and has the small community of Ffwrnais (Furnace) towards the south south-east.

When the original 30-99m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website, this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category.

After the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-evaluated and it was listed under the point (Pt. c 23m) notation with an estimated c 15m of drop, based on an estimated c 23m summit height and an estimated c 8m bwlch height, with both heights based on interpolation of 10m contouring that appears on the Ordnance Survey 1:25,000 Explorer map. 

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

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 472 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Cae Ynys Edwin in the apportionments, with the details on the Tithe map appearing in the parish of Llanfihangel Genau’r Glyn and in the county named as Cardigan. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 30-99m Twmpau is Cae Ynys Edwin, and this was derived from the Tithe map. 

 

The full details for the hill are:

Group:  Banc Llechwedd Mawr

Name:  Cae Ynys Edwin

Previously Listed Name:  Pt. c 23m 

OS 1:50,000 map:  135

Summit Height:  29.5m (LIDAR) 

Summit Grid Reference:  SN 67832 96352 (LIDAR)               

Bwlch Height:  4.2m (LIDAR) 

Bwlch Grid Reference:  SN 67880 96073 (LIDAR) 

Drop:  25.3m (LIDAR) 

 

Myrddyn Phillips (December)




Mapping Mountains - Significant Name Changes - 30-99m Twmpau

Parc (SH 755 006) - 108th significant name change

Hill Reclassifications post for Parc

 

There has been a Significant Name Change to a hill that is listed in the 30-99m Twmpau, 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 Parc (SH 755 006)

The criteria for the list 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, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

30-99m Twmpau by Myrddyn Phillips

The hill is adjoined to the Banc Llechwedd Mawr group of hills, which are situated in the northern part of South Wales (Region B, Sub-Region B1), and it is positioned with the A489 road to its north and a minor road to its south, and has the town of Machynlleth towards the north-west.

When the original 30-99m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website, this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category.

After the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-evaluated and it was listed under the name of Parc Common, which is a prominent name that appears adjacent to the summit of this hill on the Ordnance Survey 1:25,000 Explorer map.  With its numerical details given as an estimated c 21m of drop, based on the 58m summit spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map and an estimated c 37m bwlch height, based on interpolation of 10m contouring between 30m – 40m. 

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

The intricacies of language and prioritising one in favour of another for listing a hill is fraught with complication, with originating Cymraeg names being anglicised and also originating English names being cymricised, examples such as these are more common in border country and especially so for anglicised forms.  There is no steadfast rule that fits all, but as a standard a name that has its origins in the Welsh language and where this is substantiated by either historic documentation and/or contemporary usage should be prioritised in favour of a contemporary anglicised or English version of the name.  Likewise, if a name exists where an element of it is in English and if this name applies to a hill that is situated in a Welsh speaking part of Wales it is standard practice to use a full Welsh term for the name.  It is also standard practice to use a Welsh name for a hill if another name exists that has originated in a different language.

Therefore, the name this hill is now listed by in the 30-99m Twmpau is Parc, with this name prioritised over the mixed language name favoured on the contemporary Ordnance Survey 1:25,000 Explorer map. 

 

The full details for the hill are:

Group:  Banc Llechwedd Mawr

Name:  Parc

Previously Listed Name:  Parc Common 

OS 1:50,000 map:  135

Summit Height:  59.15m (LIDAR) 

Summit Grid Reference:  SH 75555 00641 (LIDAR)               

Bwlch Height:  33.8m (LIDAR) 

Bwlch Grid Reference:  SH 75546 00500 (LIDAR) 

Drop:  25.4m (LIDAR) 

 

My thanks to Aled Williams for advice relating to the listed name of this hill 

Myrddyn Phillips (November 2024)




Mapping Mountains - Significant Name Changes - 30-99m Twmpau

Ffridd (SN 708 986) - 107th significant name change

Hill Reclassifications post for Ffridd


There has been a Significant Name Change to a hill that is listed in the 30-99m Twmpau, 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 Ffridd (SN 708 986)

The criteria for the list 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, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

30-99m Twmpau by Myrddyn Phillips

The hill is adjoined to the Banc Llechwedd Mawr group of hills, which are situated in the northern part of South Wales (Region B, Sub-Region B1), and it is positioned with the A487 road to its west and a minor road to its east, and has the town of Machynlleth towards the north-east.

When the original 30-99m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website, this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category.

After the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-evaluated and it was listed under the point (Pt. 98m) notation with an estimated c 21m of drop, based on the 98m summit spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map and an estimated c 77m bwlch height, based on interpolation of 10m contouring between 70m – 80m. 

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

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 980 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Ffridd in the apportionments, with the details on the Tithe map appearing in the parish of Machynlleth and in the county named as Montgomery. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 30-99m Twmpau is Ffridd, and this was derived from the Tithe map. 

 

The full details for the hill are:

Group:  Banc Llechwedd Mawr

Name:  Ffridd

Previously Listed Name:  Pt. 98m 

OS 1:50,000 map:  135

Summit Height:  97.6m (LIDAR) 

Summit Grid Reference:  SN 70875 98692 (LIDAR)               

Bwlch Height:  74.5m (LIDAR) 

Bwlch Grid Reference:  SN 71072 98917 (LIDAR) 

Drop:  23.1m (LIDAR) 

 

Myrddyn Phillips (October 2024)

 



Mapping Mountains - Significant Name Changes - 30-99m Twmpau

Box Cemetery (SN 520 009) - 106th significant name change

Hill Reclassifications post for Box Cemetery

 

There has been a Significant Name Change to a hill that is listed in the 30-99m Twmpau, 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 Box Cemetery (SN 520 009)

The criteria for the list 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, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

30-99m Twmpau by Myrddyn Phillips

The hill is adjoined to the Mynydd Sylen 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-east, the A476 road to its north-west, a minor road and the A484 road to its south-west and the A4138 road to its east, and has the town of Llanelli surrounding it.

When the original 30-99m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website, this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category.

After the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-evaluated and it was listed under the point (Pt. 48m) notation with 19m of drop, based on the 48m summit spot height that apperas on the Ordnance Survey 1:25,000 Explorer map and the 29m bwlch spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map. 

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, and a variety of these refer to the area taking in this hill as Box Cemetery.

Therefore, the name this hill is now listed by in the 30-99m Twmpau is Box Cemetery, and this was derived from a variety of online sources. 

 

The full details for the hill are:

Group:  Mynydd Sylen

Name:  Box Cemetery

Previously Listed Name:  Pt. 48m 

OS 1:50,000 map:  159

Summit Height:  48.5m (LIDAR) 

Summit Grid Reference:  SN 52024 00937 & SN 52025 00938 & SN 52028 00939 & SN 52030 00937 (LIDAR)

Bwlch Height:  27.1m (LIDAR) 

Bwlch Grid Reference:  SN 52103 01769 (LIDAR) 

Drop:  21.4m (LIDAR) 

 

Myrddyn Phillips (October 2024) 




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