The Welsh P15s – Significant Name Changes
The Welsh P15s are all Welsh hills that have a minimum of 15m of drop, irrespective of their height. Accompanying the main P15 list is a sub list entitled; The Welsh Sub-P15s, with the qualification to this sub category being all Welsh hills with 14m or more and below 15m 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 P15 list and the sub list that are below P20 and therefore documented in other lists, appear below presented chronologically in receding order.
Mapping Mountains - Significant Name Changes - The Welsh P15s
Comin Gwauncaegurwen (SN 711 123) - 90th significant name change
Hill Reclassifications post for Comin Gwauncaegurwen
Significant Height Revisions post for Comin Gwauncaegurwen
There has been a Significant Name Change to a hill that is listed in The Welsh P15s, 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 Comin Gwauncaegurwen (SN 711 123) |
The Welsh P15s by Myrddyn Phillips |
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
The full details for the hill are:
Group: Mynydd Du
Name: Comin Gawuncaegurwen
Previously Listed Name: unclassified
OS 1:50,000 map: 160
Summit Height: 216.6 (LIDAR)
Summit Grid Reference: SN 71158 12343 (LIDAR)
Bwlch Height: 196.6m (LIDAR)
Bwlch Grid Reference: SN 71330 12592 & SN 71332 12592 (LIDAR)
Drop: 19.98m (LIDAR)
Myrddyn Phillips (April 2024)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Y Garreg Las (SN 768 098) - 89th significant name change
Hill Reclassifications post for Y Garreg Las
Summit Relocations post for Y Garreg Las
There has been a Significant Name Change to a hill that is listed in The Welsh P15s, 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 Y Garreg Las (SN 768 098) |
The Welsh P15s by Myrddyn Phillips |
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the interactive mapping hosted on the WalkLakes website |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Mynydd Du
Name: Y Garreg Las
Previously Listed Name: Pt. 157m
OS 1:50,000 map: 160
Summit Height: 158.5m (LIDAR)
Summit Grid Reference: SN 76803 09804 (LIDAR)
Bwlch Height: 141.7m (LIDAR)
Bwlch Grid Reference: SN 76797 09723 (LIDAR)
Drop: 16.75m (LIDAR)
My thanks to Aled Williams for advice relating to the listed name of this hill
Myrddyn Phillips (April 2024)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Tyn Ffynnon (SN 549 487) - 88th significant name change
Hill Reclassifications post for Tyn Ffynnon
Summit Relocations post for Tyn Ffynnon
There has been a Significant Name Change to a hill that is listed in The Welsh P15s, 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 Tyn Ffynnon (SN 549 487) |
The Welsh P15s by Myrddyn Phillips |
Allt Ty-llwyd | 224m | SN550487 | 146 | 199 | Name from buildings to the South-East. |
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 add the word Allt to it. 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.
When the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-evaluated and the summit of the qualifying hill relocated to SN 564 484.
Subsequently, when the listing that became known as The Welsh P15s was being compiled, this hill was listed under the point (Pt. 224m) notation with an estimated c 16m of drop, based on the 224m summit spot height that appears on the Ordnance Survey 1:50,000 Landranger map and 1:25,000 Explorer map and an estimated c 208m bwlch height, based on interpolation of 5m contouring between 205m - 210m 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 |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Mynydd Bach
Name: Tyn Ffynnon
Previously Listed Name: Pt. 224m (previously Allt Ty-llwyd)
OS 1:50,000 map: 146
Summit Height: 224.3m (LIDAR)
Summit Grid Reference: SN 54956 48738 (LIDAR)
Bwlch Height: 210.0m (LIDAR)
Bwlch Grid Reference: SN 55631 48720 (LIDAR)
Drop: 14.3m (LIDAR)
Myrddyn Phillips (December 2022)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Craignant Hill (SJ 118 164) - 87th significant name change
Survey post for Craignant Hill
Hill Reclassifications post for Craignant Hill
There has been a Significant Name Change to a hill that is listed in The Welsh P15s, with the summit height, bwlch height and their locations, the drop and status of the hill derived from a Trimble GeoXH 6000 survey conducted by Myrddyn Phillips.
Craignant Hill (SJ 118 164) |
The Welsh P15s by Myrddyn Phillips |
Extract from the Ordnance Survey 1:25,000 Explorer map |
John Evans on the right with Aled Watkins |
The full details for the hill are:
Group: Foel Cedig
Name: Craignant Hill
Previously Listed Name: Pt. 329m
OS 1:50,000 map: 125
Summit Height: 329.3m (converted to OSGM15)
Summit Grid Reference: SJ 11893 16416
Bwlch Height: 311.4m (converted to OSGM15)
Bwlch Grid Reference: SJ 11967 16505
Drop: 18.0m
Myrddyn Phillips (August 2022)
Mapping Mountains - Significant Name Changes - The Welsh P15s
TÅ· Croes (SH 785 187) - 86th significant name change
There has been a Significant Name Change to a hill that is listed in The Welsh P15s, with the summit height, bwlch height and their locations, the drop and status of the hill derived from a Trimble GeoXH 6000 survey and subsequent LIDAR analysis conducted by Myrddyn Phillips.
TÅ· Croes (SH 785 187) |
The Welsh P15s – Welsh hills with 15m minimum drop, irrespective of their height, with an accompanying sub list entitled the Welsh Sub-P15s, with the criteria for this sub category being all Welsh hills with 14m or more and below 15m of drop. The list is authored by Myrddyn Phillips, with the Introduction to the list appearing on Mapping Mountains on the 10th May 2019.
The Welsh P15s by Myrddyn Phillips |
When the listing that became known as The Welsh P15s was being compiled, this hill was listed under the point (Pt. 307m) notation with 18m of drop, based on the 307m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and the 289m 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 |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Aran Fawddwy
Name: TÅ· Croes
Previously Listed Name: Pt. 307m
OS 1:50,000 map: 124
Summit Height: 306.6m (converted to OSGM15, Trimble GeoXH 6000)
Summit Grid Reference: SH 78563 18733 (Trimble GeoXH 6000)
Bwlch Height: 288.95m (LIDAR)
Bwlch Grid Reference: SH 78671 18487 (LIDAR)
Drop: 17.7m (Trimble GeoXH 6000 summit and LIDAR bwlch)
Myrddyn Phillips (January 2022)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Sheep Pasture (SN 935 821) - 85th significant name change
Hill Rclassifications post for Sheep Pasture
There has been a Significant Name Change to a hill that is listed in The Welsh P15s, with the summit height, bwlch height and their locations, the drop and status of the hill derived from LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips.
Sheep Pasture (SN 935 821) |
The Welsh P15s – Welsh hills with 15m minimum drop, irrespective of their height, with an accompanying sub list entitled the Welsh Sub-P15s, with the criteria for this sub category being all Welsh hills with 14m or more and below 15m of drop. The list is authored by Myrddyn Phillips, with the Introduction to the list appearing on Mapping Mountains on the 10th May 2019.
The Welsh P15s by Myrddyn Phillips |
When the listing that became known as The Welsh P15s was being compiled, this hill was listed under the point (Pt. 356m) notation with an estimated c 21m of drop, based on the 356m summit spot height that appears on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map and an estimated c 335m bwlch height based on interpolation of 10m contouring between 330m – 340m.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Pumlumon
Name: Sheet Pasture
Previously Listed Name: Pt. 356m
OS 1:50,000 map: 136
Summit Height: 355.3m (converted to OSGM15, Trimble GeoXH 6000)
Summit Grid Reference: SN 93587 82145 (Trimble GeoXH 6000)
Bwlch Height: 336.4m (LIDAR)
Bwlch Grid Reference: SN 93150 82163 (LIDAR)
Drop: 18.9m (Trimble GeoXH 6000 summit and LIDAR bwlch)
Myrddyn Phillips (November 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Cerrig Engan (SH 405 734) - 84th significant name change
Hill Reclassifications post for Cerrig Engan
There has been a Significant Name Change to a hill that is listed in The Welsh P15s, 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 Cerrig Engan (SH 405 734) |
The Welsh P15s – Welsh hills with 15m minimum drop, irrespective of their height, with an accompanying sub list entitled the Welsh Sub-P15s, with the criteria for this sub category being all Welsh hills with 14m or more and below 15m of drop. The list is authored by Myrddyn Phillips, with the Introduction to the list appearing on Mapping Mountains on the 10th May 2019.
The Welsh P15s by Myrddyn Phillips |
When the listing that became known as The Welsh P15s was being compiled, this hill was not included in either the main P15 list or the accompanying P14 sub list, but it was documented under the point (Pt c 70m) notation with an estimated c 13m of drop, based on an estimated c 70m summit height and an estimated c 57m bwlch height, with both heights based on interpolation of 5m contouring that appear on the Ordnance Survey 1:25,000 Explorer map.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Ynys Môn
Name: Cerrig Engan
Previously Listed Name: Pt. c 70m
OS 1:50,000 map: 114, 115
Summit Height: 69.4m (LIDAR)
Summit Grid Reference: SH 40529 73455 (LIDAR)
Bwlch Height: 54.4m (LIDAR)
Bwlch Grid Reference: SH 40431 73497 (LIDAR)
Drop: 15.0m (LIDAR)
Myrddyn Phillips (October 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Caer Helen (SH 325 780) - 83rd significant name change
Hill Reclassifications post for Caer Helen
There has been a Significant Name Change to a hill that is listed in The Welsh P15s, 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 Caer Helen (SH 325 780) |
The Welsh P15s – Welsh hills with 15m minimum drop, irrespective of their height, with an accompanying sub list entitled the Welsh Sub-P15s, with the criteria for this sub category being all Welsh hills with 14m or more and below 15m of drop. The list is authored by Myrddyn Phillips, with the Introduction to the list appearing on Mapping Mountains on the 10th May 2019.
The Welsh P15s by Myrddyn Phillips |
When the listing that became known as The Welsh P15s was being compiled, this hill was not included in either the main P15 list or the accompanying P14 sub list, but it was documented under the point (Pt. 34m) notation with an estimated c 13m of drop, based on the 34m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 21m bwlch height, based on interpolation of 5m contouring between 20m – 25m.
Extract from the Ordnance Survey 1:25,000 Explorer map |
One of the mapping resources now available online is the Ordnance Survey series of Six-Inch maps via the National Library of Scotland website. This mapping preceded the 1:10,000 base maps and has proven an excellent resource for name placement and is much better for this compared to the publicly available Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map. And it is the Six-Inch map that places the name of Caer Helen adjacent to the summit of this hill.
Extract from the Ordnance Survey series of Six-Inch maps |
The full details for the hill are:
Group: Ynys Môn
Name: Caer Helen
Previously Listed Name: Pt. 34m
OS 1:50,000 map: 114
Summit Height: 33.9m (LIDAR)
Summit Grid Reference: SH 32589 78052 (LIDAR)
Bwlch Height: 17.4m (LIDAR)
Bwlch Grid Reference: SH 32770 78215 (LIDAR)
Drop: 16.5m (LIDAR)
Myrddyn Phillips (October 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Frigan (SH 483 845) - 82nd significant name change
Hill Reclassifications post for Frigan
There has been a Significant Name Change to a hill that was listed in The Welsh P15s, 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 Frigan (SH 483 845) |
The Welsh P15s – Welsh hills with 15m minimum drop, irrespective of their height, with an accompanying sub list entitled the Welsh Sub-P15s, with the criteria for this sub category being all Welsh hills with 14m or more and below 15m of drop. The list is authored by Myrddyn Phillips, with the Introduction to the list appearing on Mapping Mountains on the 10th May 2019.
The Welsh P15s by Myrddyn Phillips |
When the listing that became known as The Welsh P15s was being compiled, this hill was listed under the point (Pt. 98m) notation with 14m of drop, based on the 98m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and the 84m 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 |
Extract from the Tithe map |
The enclosed land where the summit of this hill is situated is given the number 16 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 Frigan in the apportionments, with the details on the Tithe map appearing in the parish of Llaneugrad and in the county named as Anglesey.
Extract from the apportionments |
The full details for the hill are:
Group: Ynys Môn
Name: Frigan
Previously Listed Name: Pt. 98m
OS 1:50,000 map: 114, 115
Summit Height: 97.8m (LIDAR)
Summit Grid Reference: SH 48325 84509 (LIDAR)
Bwlch Height: 86.3m (LIDAR)
Bwlch Grid Reference: SH 48653 84477 (LIDAR)
Drop: 11.5m (LIDAR)
Myrddyn Phillips (October 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Tafarn y Botel (SH 404 838) - 81st significant name change
There has been a Significant Name Change to a hill that is listed in The Welsh P15s, with the summit height, bwlch height and their locations, the drop and status of the hill derived from detail on contemporary maps produced from Ordnance Survey data.
The criteria for the list that this name change applies to are:
The Welsh P15s – Welsh hills with 15m minimum drop, irrespective of their height, with an accompanying sub list entitled the Welsh Sub-P15s, with the criteria for this sub category being all Welsh hills with 14m or more and below 15m of drop. The list is authored by Myrddyn Phillips, with the Introduction to the list appearing on Mapping Mountains on the 10th May 2019.
The Welsh P15s by Myrddyn Phillips |
When the listing that became known as The Welsh P15s was being compiled, this hill was listed under the point (Pt. c 97m) notation with an estimated c 14m of drop, based on an estimated c 97m summit height and an estimated c 83m bwlch height, with both heights based on interpolation of 5m contouring that appear on the Ordnance Survey 1:25,000 Explorer map. With the interactive mapping available on the Magic Maps website now showing a 97m summit spot height.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Ynys Môn
Name: Tafarn y Botel
Previously Listed Name: Pt. c 97m
OS 1:50,000 map: 114, 115
Summit Height: 97m (spot height)
Summit Grid Reference: SH 40454 83854 (spot height)
Bwlch Height: c 83m (interpolation)
Bwlch Grid Reference: SH 40240 83508 (interpolation)
Drop: c 14m (spot height summit and interpolated bwlch)
Myrddyn Phillips (October 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Chwaen Goch (SH 392 845) - 80th significant name change
There has been a Significant Name Change to a hill that is listed in The Welsh P15s, with the summit height, bwlch height and their locations, the drop and status of the hill derived from detail on contemporary maps produced from Ordnance Survey data and LIDAR analysis conducted by Myrddyn Phillips.
LIDAR image of Chwaen Goch (SH 392 845) |
The Welsh P15s – Welsh hills with 15m minimum drop, irrespective of their height, with an accompanying sub list entitled the Welsh Sub-P15s, with the criteria for this sub category being all Welsh hills with 14m or more and below 15m of drop. The list is authored by Myrddyn Phillips, with the Introduction to the list appearing on Mapping Mountains on the 10th May 2019.
The Welsh P15s by Myrddyn Phillips |
When the listing that became known as The Welsh P15s was being compiled, this hill was listed under the point (Pt. 94m) notation with 16m of drop, based on the 94m summit spot height and the 78m 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, with the 78m bwlch spot height also appearing on the Ordnance Survey 1:50,000 Landranger map.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Ynys Môn
Name: Chwaen Goch
Previously Listed Name: Pt. 94m
OS 1:50,000 map: 114
Summit Height: 94.2m (LIDAR)
Summit Grid Reference: SH 39200 84545 (LIDAR)
Bwlch Height: 78m (spot height)
Bwlch Grid Reference: SH 38742 83198 (spot height)
Drop: 16m (LIDAR summit and spot height bwlch)
Myrddyn Phillips (October 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Pant y Saer (SH 512 824) - 79th significant name change
There has been a Significant Name Change to a hill that is listed in The Welsh P15s, with the summit height, bwlch height and their locations, the drop and status of the hill derived from detail on contemporary maps produced from Ordnance Survey data and LIDAR analysis conducted by Myrddyn Phillips.
LIDAR image of Pant y Saer (SH 512 824) |
The Welsh P15s – Welsh hills with 15m minimum drop, irrespective of their height, with an accompanying sub list entitled the Welsh Sub-P15s, with the criteria for this sub category being all Welsh hills with 14m or more and below 15m of drop. The list is authored by Myrddyn Phillips, with the Introduction to the list appearing on Mapping Mountains on the 10th May 2019.
The Welsh P15s by Myrddyn Phillips |
When the listing that became known as The Welsh P15s was being compiled, this hill was listed under the name of Cytiau’r Gwyddelod with an estimated c 17m of drop, based on the 90m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 73m bwlch height, based on interpolation of 5m contouring between 70m – 75m.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Ynys Môn
Name: Pant y Saer
Previously Listed Name: Cytiau’r Gwyddelod
OS 1:50,000 map: 114, 115
Summit Height: 88.3m (LIDAR)
Summit Grid Reference: SH 51239 82400 (LIDAR)
Bwlch Height: c 73m (interpolation)
Bwlch Grid Reference: SH 51151 82380 (interpolation)
Drop: 15m (LIDAR summit and interpolated bwlch)
Myrddyn Phillips (October 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Melin Llanddyfnan (SH 483 786) - 78th significant name change
Hill Reclassifications post for Melin Llanddyfnan
There has been a Significant Name Change to a hill that is listed in The Welsh P15s, 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 Llanddyfnan (SH 483 786) |
The Welsh P15s – Welsh hills with 15m minimum drop, irrespective of their height, with an accompanying sub list entitled the Welsh Sub-P15s, with the criteria for this sub category being all Welsh hills with 14m or more and below 15m of drop. The list is authored by Myrddyn Phillips, with the Introduction to the list appearing on Mapping Mountains on the 10th May 2019.
The Welsh P15s by Myrddyn Phillips |
When the listing that became known as The Welsh P15s was being compiled, this hill was listed under the point (Pt. c 86m) notation with an estimated c 13m of drop, based on an estimated c 86m summit height and an estimated c 73m bwlch height, with both heights based on interpolation of 5m contouring that appear on the Ordnance Survey 1:25,000 Explorer map.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Ordnance Survey Six-Inch map hosted as a part of the Tithe map |
The full details for the hill are:
Group: Ynys Môn
Name: Melin Llanddyfnan
Previously Listed Name: Pt. c 86m
OS 1:50,000 map: 114, 115
Summit Height: 87.2m (LIDAR)
Summit Grid Reference: SH 48371 78617 (LIDAR)
Bwlch Height: 72.2m (LIDAR)
Bwlch Grid Reference: SH 48391 79121 (LIDAR)
Drop: 14.9m (LIDAR)
Myrddyn Phillips (October 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Cae Pellaf (SH 482 779) - 77th significant name change
There has been a Significant Name Change to a hill that is listed in The Welsh P15s, 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 Pellaf (SH 482 779) |
The Welsh P15s – Welsh hills with 15m minimum drop, irrespective of their height, with an accompanying sub list entitled the Welsh Sub-P15s, with the criteria for this sub category being all Welsh hills with 14m or more and below 15m of drop. The list is authored by Myrddyn Phillips, with the Introduction to the list appearing on Mapping Mountains on the 10th May 2019.
The Welsh P15s by Myrddyn Phillips |
When the listing that became known as The Welsh P15s was being compiled, this hill was listed under the name of Mountain Covert with an estimated c 16m of drop, based on an estimated c 88m summit height and an estimated c 72m bwlch height, with both heights based on interpolation of 5m contouring that appear on the Ordnance Survey 1:25,000 Explorer map.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Ynys Môn
Name: Cae Pellaf
Previously Listed Name: Mountain Covert
OS 1:50,000 map: 114, 115
Summit Height: 87.5m (LIDAR)
Summit Grid Reference: SH 48250 77931 (LIDAR)
Bwlch Height: 71.7m (LIDAR)
Bwlch Grid Reference: SH 48415 78170 (LIDAR)
Drop: 15.8m (LIDAR)
Myrddyn Phillips (October 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Cefn Coch (SH 464 808) - 76th significant name change
There has been a Significant Name Change to a hill that is listed in The Welsh P15s, 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 Cefn Coch (SH 464 808) |
The Welsh P15s – Welsh hills with 15m minimum drop, irrespective of their height, with an accompanying sub list entitled the Welsh Sub-P15s, with the criteria for this sub category being all Welsh hills with 14m or more and below 15m of drop. The list is authored by Myrddyn Phillips, with the Introduction to the list appearing on Mapping Mountains on the 10th May 2019.
The Welsh P15s by Myrddyn Phillips |
When the listing that became known as The Welsh P15s was being compiled, this hill was listed under the point (Pt. 78m) notation with 15m of drop, based on the 78m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and the 63m 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 |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Ynys Môn
Name: Cefn Coch
Previously Listed Name: Pt. 78m
OS 1:50,000 map: 114, 115
Summit Height: 78.7m (LIDAR)
Summit Grid Reference: SH 46418 80804 (LIDAR)
Bwlch Height: 63.6m (LIDAR)
Bwlch Grid Reference: SH 47591 80714 (LIDAR)
Drop: 15.1m (LIDAR)
Myrddyn Phillips (October 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Tre Ysgawen (SH 449 811) - 75th significant name change
There has been a Significant Name Change to a hill that is listed in The Welsh P15s, 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 Tre Ysgawen (SH 449 811) |
The Welsh P15s – Welsh hills with 15m minimum drop, irrespective of their height, with an accompanying sub list entitled the Welsh Sub-P15s, with the criteria for this sub category being all Welsh hills with 14m or more and below 15m of drop. The list is authored by Myrddyn Phillips, with the Introduction to the list appearing on Mapping Mountains on the 10th May 2019.
The Welsh P15s by Myrddyn Phillips |
When the listing that became known as The Welsh P15s was being compiled, this hill was listed under the point (Pt. 87m) notation with an estimated c 14m of drop, based on the 87m 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 73m bwlch height, based on interpolation of 5m contouring between 70m - 75m that appear on the Ordnance Survey 1:25,000 Explorer map.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Ynys Môn
Name: Tre Ysgawen
Previously Listed Name: Pt. 87m
OS 1:50,000 map: 114, 115
Summit Height: 87.9m (LIDAR)
Summit Grid Reference: SH 44915 81128 (LIDAR)
Bwlch Height: 73.5m (LIDAR)
Bwlch Grid Reference: SH 45342 81447 (LIDAR)
Drop: 14.45m (LIDAR)
Myrddyn Phillips (October 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Pont y Cochyn (SH 446 846) - 74th significant name change
There has been a Significant Name Change to a hill that is listed in The Welsh P15s, with the summit height, bwlch height and their locations, the drop and status of the hill derived from detail on contemporary maps produced from Ordnance Survey data and LIDAR analysis conducted by Myrddyn Phillips.
LIDAR image of Pont y Cochyn (SH 446 846) |
The Welsh P15s – Welsh hills with 15m minimum drop, irrespective of their height, with an accompanying sub list entitled the Welsh Sub-P15s, with the criteria for this sub category being all Welsh hills with 14m or more and below 15m of drop. The list is authored by Myrddyn Phillips, with the Introduction to the list appearing on Mapping Mountains on the 10th May 2019.
The Welsh P15s by Myrddyn Phillips |
When the listing that became known as The Welsh P15s was being compiled, this hill was listed under the point (Pt. 77m) notation with an estimated c 19m of drop, based on the 77m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 58m bwlch height, based on interpolation of 5m contouring between 55m - 60m.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Ynys Môn
Name: Pont y Cochyn
Previously Listed Name: Pt. 77m
OS 1:50,000 map: 114, 115
Summit Height: 76.3m (LIDAR)
Summit Grid Reference: SH 44618 84607 & SH 44619 84609 & SH 44622 84606 & SH 44626 84611 & SH 44622 84611 (LIDAR)
Bwlch Height: c 58m (interpolation)
Bwlch Grid Reference: SH 44359 84106 (interpolation)
Drop: c 18m (LIDAR summit and interpolated bwlch)
Myrddyn Phillips (October 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Plas Coedana (SH 418 820) - 73rd significant name change
There has been a Significant Name Change to a hill that is listed in The Welsh P15s, with the summit height, bwlch height and their locations, the drop and status of the hill derived from detail on contemporary maps produced from Ordnance Survey data.
The criteria for the list that this name change applies to are:
The Welsh P15s – Welsh hills with 15m minimum drop, irrespective of their height, with an accompanying sub list entitled the Welsh Sub-P15s, with the criteria for this sub category being all Welsh hills with 14m or more and below 15m of drop. The list is authored by Myrddyn Phillips, with the Introduction to the list appearing on Mapping Mountains on the 10th May 2019.
The Welsh P15s by Myrddyn Phillips |
When the listing that became known as The Welsh P15s was being compiled, this hill was listed under the point (Pt. 87m) notation with an estimated c 14m of drop, based on the 87m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 73m bwlch height, based on interpolation of 5m contouring between 70m - 75m.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Ynys Môn
Name: Plas Coedana
Previously Listed Name: Pt. 87m
OS 1:50,000 map: 114, 115
Summit Height: 87m (spot height)
Summit Grid Reference: SH 41802 82001 (spot height)
Bwlch Height: c 73m (interpolation)
Bwlch Grid Reference: SH 41954 82340 (interpolation)
Drop: c 14m (spot height summit and interpolated bwlch)
Myrddyn Phillips (October 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Castell Tre Gof (SH 414 742) - 72nd significant name change
There has been a Significant Name Change to a hill that is listed in The Welsh P15s, with the summit height, bwlch height and their locations, the drop and status of the hill derived from detail on contemporary maps produced from Ordnance Survey data and LIDAR analysis conducted by Myrddyn Phillips.
LIDAR bwlch image of Castell Tre Gof (summit at SH 414 742) |
The Welsh P15s – Welsh hills with 15m minimum drop, irrespective of their height, with an accompanying sub list entitled the Welsh Sub-P15s, with the criteria for this sub category being all Welsh hills with 14m or more and below 15m of drop. The list is authored by Myrddyn Phillips, with the Introduction to the list appearing on Mapping Mountains on the 10th May 2019.
The Welsh P15s by Myrddyn Phillips |
When the listing that became known as The Welsh P15s was being compiled, this hill was listed under the name of Castell Bryn Twr, which is a name that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map, with an estimated c 16m of drop, based on the 73m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 57m bwlch height based on interpolation of 5m contouring between 55m – 60m.
Extract from the Ordnance Survey 1:25,000 Explorer map |
One of the mapping resources now available online is the Ordnance Survey series of Six-Inch maps via the National Library of Scotland website. This mapping preceded the 1:10,000 base maps and has proven an excellent resource for name placement and is much better for this compared to the publicly available Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map. And it is the Six-Inch map that places the name of Castell Tre Gof adjacent to the summit of this hill.
Extract from the Ordnance Survey series of Six-Inch maps |
The full details for the hill are:
Group: Ynys Môn
Name: Castell Tre Gof
Previously Listed Name: Castell Bryn Twr
OS 1:50,000 map: 114, 115
Summit Height: 73m (spot height)
Summit Grid Reference: SH 41445 74256 (spot height)
Bwlch Height: 56.2m (LIDAR)
Bwlch Grid Reference: SH 41795 75476 (LIDAR)
Drop: 17m (spot height summit and LIDAR bwlch)
Myrddyn Phillips (October 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Castell Eden (SH 396 761) - 71st significant name change
There has been a Significant Name Change to a hill that is listed in The Welsh P15s, 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 Castell Eden (SH 396 761) |
The Welsh P15s – Welsh hills with 15m minimum drop, irrespective of their height, with an accompanying sub list entitled the Welsh Sub-P15s, with the criteria for this sub category being all Welsh hills with 14m or more and below 15m of drop. The list is authored by Myrddyn Phillips, with the Introduction to the list appearing on Mapping Mountains on the 10th May 2019.
The Welsh P15s by Myrddyn Phillips |
When the listing that became known as The Welsh P15s was being compiled, this hill was listed under the point (Pt. 81m) notation with an estimated c 14m of drop, based on the 81m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 67m bwlch height based on interpolation of 5m contouring between 65m – 70m.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Ynys Môn
Name: Castell Eden
Previously Listed Name: Pt. 81m
OS 1:50,000 map: 114
Summit Height: 80.6m (LIDAR)
Summit Grid Reference: SH 39623 76116 & SH 39624 76118 (LIDAR)
Bwlch Height: 66.1m (LIDAR)
Bwlch Grid Reference: SH 41419 77419 (LIDAR)
Drop: 14.5m (LIDAR)
Myrddyn Phillips (October 2021)
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