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
Eirianallt Groes (SH 413 787) - 70th 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 87m) notation with an estimated c 14m of drop, based on an estimated c 87m summit height and an estimated c 73m bwlch height, with both values based on interpolation of 5m contouring that appear on the Ordnance Survey 1:25,000 Explorer map.
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The full details for the hill are:
Group: Ynys Môn
Name: Eirianallt Groes
Previously Listed Name: Pt. c 87m
OS 1:50,000 map: 114, 115
Summit Height: c 87m (interpolation)
Summit Grid Reference: SH 41323 78732 (interpolation)
Bwlch Height: c 73m (interpolation)
Bwlch Grid Reference: SH 41168 78457 (interpolation)
Drop: c 14m (interpolation)
Myrddyn Phillips (October 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Pen Felin Wynt (SH 390 687) - 69th 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 Pen Felin Wynt (SH 390 687) |
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. 63m) notation with 19m of drop, based on the 63m summit spot height that appears on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map and which is adjoined to a triangulation pillar and the 44m bwlch spot height that appears on the Ordnance Survey 1:25,000 Explorer map.
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The full details for the hill are:
Group: Ynys Môn
Name: Pen Felin Wynt
Previously Listed Name: Pt. 63m
OS 1:50,000 map: 114
Summit Height: 63m (triangulation pillar)
Summit Grid Reference: SH 39075 68753 (triangulation pillar)
Bwlch Height: 45.4m (LIDAR)
Bwlch Grid Reference: SH 38300 67682 (LIDAR)
Drop: 18m (triangulation pillar summit and LIDAR bwlch)
Myrddyn Phillips (October 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Tredda Ffridd Fawr (SH 384 716) - 68th significant name change
Hill Reclassifications post for Tredda Ffridd Fawr
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 Tredda Ffridd Fawr (SH 384 716) |
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. 48m) notation with an estimated c 14m of drop, based on the 48m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 34m bwlch height, based on interpolation of 5m contouring between 30m – 35m.
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The full details for the hill are:
Group: Ynys Môn
Name: Tredda Ffridd Fawr
Previously Listed Name: Pt. 48m
OS 1:50,000 map: 114
Summit Height: 48.5m (LIDAR)
Summit Grid Reference: SH 38448 71642 & SH 38445 71640 (LIDAR)
Bwlch Height: 35.7m (LIDAR)
Bwlch Grid Reference: SH 38806 71755 & SH 38805 71754 (LIDAR)
Drop: 12.8m (LIDAR)
Myrddyn Phillips (October 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Caer Glaw (SH 375 768) - 67th 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 Caer Glaw (summit at SH 375 768) |
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. 63m) notation with 16m of drop, based on the 63m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and the 47m 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.
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The full details for the hill are:
Group: Ynys Môn
Name: Caer Glaw
Previously Listed Name: Pt. 63m
OS 1:50,000 map: 114
Summit Height: 63m (spot height)
Summit Grid Reference: SH 37576 76896 (spot height)
Bwlch Height: 46.2m (LIDAR)
Bwlch Grid Reference: SH 38355 77966 (LIDAR)
Drop: 17m (spot height summit and LIDAR bwlch)
My thanks to Aled Williams for advice relating to the listed name of this hill
Myrddyn Phillips (October 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Pen Teiran (SH 336 825) - 66th 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 Pen Teiran (SH 336 825) |
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. 42m) notation with an estimated c 16m of drop, based on the 42m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 26m bwlch height, based on interpolation of 5m contouring between 25m – 30m that appears on the Ordnance Survey 1:25,000 Explorer map.
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The full details for the hill are:
Group: Ynys Môn
Name: Pen Teiran
Previously Listed Name: Pt. 42m
OS 1:50,000 map: 114
Summit Height: 42.1m (LIDAR)
Summit Grid Reference: SH 33647 82577 (LIDAR)
Bwlch Height: 25.4m (LIDAR)
Bwlch Grid Reference: SH 33932 82477 (LIDAR)
Drop: 16.7m (LIDAR)
Myrddyn Phillips (October 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Bodnolwyn Hir (SH 368 840) - 65th 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 Bodnolwyn Hir (SH 368 840) |
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. 61m) notation with an estimated c 19m of drop, based on the 61m 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 42m bwlch height, based on interpolation of 5m contouring between 40m – 45m that appears on the Ordnance Survey 1:25,000 Explorer map.
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The full details for the hill are:
Group: Ynys Môn
Name: Bodnolwyn Hir
Previously Listed Name: Pt. 61m
OS 1:50,000 map: 114
Summit Height: 60.6m (LIDAR)
Summit Grid Reference: SH 36869 84072 (LIDAR)
Bwlch Height: 44.4m (LIDAR)
Bwlch Grid Reference: SH 36599 84489 & SH 36610 84486 (LIDAR)
Drop: 16.2m (LIDAR)
Myrddyn Phillips (October 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Bodnolwyn Wen (SH 380 852) - 64th 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 Bodnolwyn Wen (SH 380 852) |
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. 57m) notation with an estimated c 15m of drop, based on the 57m 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 42m bwlch height, based on interpolation of 5m contouring between 40m – 45m that appears on the Ordnance Survey 1:25,000 Explorer map.
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The full details for the hill are:
Group: Ynys Môn
Name: Bodnolwyn Wen
Previously Listed Name: Pt. 57m
OS 1:50,000 map: 114
Summit Height: 57.1m (LIDAR)
Summit Grid Reference: SH 38003 85274 (LIDAR)
Bwlch Height: 39.8m (LIDAR)
Bwlch Grid Reference: SH 37748 85247 (LIDAR)
Drop: 17.3m (LIDAR)
Myrddyn Phillips (October 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Carnau (SH 303 764) - 63rd significant name change
Hill Reclassifications post for Carnau
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 Carnau (SH 303 764) |
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. 22m) notation with an estimated c 14m of drop, based on the 22m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 8m bwlch height, based on interpolation of 5m contouring between 5m – 10m that appears on the Ordnance Survey 1:25,000 Explorer map.
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The full details for the hill are:
Group: Ynys Môn
Name: Carnau
Previously Listed Name: Pt. 22m
OS 1:50,000 map: 114
Summit Height: 22.1m (LIDAR)
Summit Grid Reference: SH 30392 76417 (LIDAR)
Bwlch Height: 9.8m (LIDAR)
Bwlch Grid Reference: SH 30351 76179 & SH 30350 76178 (LIDAR)
Drop: 12.4m (LIDAR)
Myrddyn Phillips (October 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Plas (SH 350 772) - 62nd significant name change
Hill Reclassifications post for Plas
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 Plas (SH 350 772) |
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. 39m) notation with 15m of drop, based on the 39m summit spot height and the 24m 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.
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The full details for the hill are:
Group: Ynys Môn
Name: Plas
Previously Listed Name: Pt. 39m
OS 1:50,000 map: 114
Summit Height: 37.4m (LIDAR)
Summit Grid Reference: SH 35001 77280 (LIDAR)
Bwlch Height: 22.6m (LIDAR)
Bwlch Grid Reference: SH 35405 77441 (LIDAR)
Drop: 14.8m (LIDAR)
Myrddyn Phillips (September 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Cleifiog Isaf (SH 306 793) - 61st 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 Cleifiog Isaf (SH 306 793) |
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. 22m) notation with 19m of drop, based on the 22m summit spot height and the 3m bwlch spot height that appear on the Ordnance Survey 1:25,000 Explorer map.
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The full details for the hill are:
Group: Ynys Môn
Name: Cleifiog Isaf
Previously Listed Name: Pt. 22m
OS 1:50,000 map: 114
Summit Height: 22.6m (LIDAR)
Summit Grid Reference: SH 30601 79335 (LIDAR)
Bwlch Height: 3.1m (LIDAR)
Bwlch Grid Reference: SH 30858 79952 (LIDAR)
Drop: 19.5m (LIDAR)
Myrddyn Phillips (September 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Tŷ Croes (SH 321 807) - 60th 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 Tŷ Croes (SH 321 807) |
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. 34m) notation with an estimated c 16m of drop, based on the 34m 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 18m bwlch height based on interpolation of 5m contouring between 15m – 20m.
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The full details for the hill are:
Group: Ynys Môn
Name: Tŷ Croes
Previously Listed Name: Pt. 34m
OS 1:50,000 map: 114
Summit Height: 34.4m (LIDAR)
Summit Grid Reference: SH 32170 80764 (LIDAR)
Bwlch Height: 17.5m (LIDAR)
Bwlch Grid Reference: SH 32555 81107 (LIDAR)
Drop: 16.9m (LIDAR)
Myrddyn Phillips (September 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Gwredog (SH 417 898) - 59th 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 for Gwredog (summit at SH 417 898) |
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. 91m) notation with an estimated c 17m of drop, based on the 91m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 74m bwlch height, based on interpolation of 5m contouring between 70m – 75m.
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The full details for the hill are:
Group: Ynys Môn
Name: Gwredog
Previously Listed Name: Pt. 91m
OS 1:50,000 map: 114
Summit Height: 91m (spot height)
Summit Grid Reference: SH 41772 89835 (spot height)
Bwlch Height: 73.4m (LIDAR)
Bwlch Grid Reference: SH 42287 90178 (LIDAR)
Drop: c 18m (spot height summit and LIDAR bwlch)
Myrddyn Phillips (September 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Hafod Onnen (SH 425 908) - 58th 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 Hafod Onnen (SH 425 908) |
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. 73m) notation with an estimated c 14m of drop, based on the 73m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 59m bwlch height based on interpolation of contouring between 55m – 60m.
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The full details for the hill are:
Group: Ynys Môn
Name: Hafod Onnen
Previously Listed Name: Pt. 73m
OS 1:50,000 map: 114
Summit Height: 73.9m (LIDAR)
Summit Grid Reference: SH 42507 90850 (LIDAR)
Bwlch Height: 59.4m (LIDAR)
Bwlch Grid Reference: SH 42499 90616 (LIDAR)
Drop: 14.5m (LIDAR)
Myrddyn Phillips (September 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Maes Llwyn (SH 435 920) - 57th significant name change
Significant Height Revisions post for Maes Llwyn
Summit Relocations post for Maes Llwyn
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 Maes Llwyn (SH 435 920) |
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 25m of drop, based on the 77m summit spot height positioned on or near to a covered reservoir, that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map and the 52m bwlch spot height that appears on the Ordnance Survey 1:50,000 Landranger map.
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The full details for the hill are:
Group: Ynys Môn
Name: Maes Llwyn
Previously Listed Name: Pt. 77m
OS 1:50,000 map: 114
Summit Height: 74.0m (LIDAR)
Summit Grid Reference: SH 43593 92022 (LIDAR)
Bwlch Height: 54.9m (LIDAR)
Bwlch Grid Reference: SH 43658 91747 (LIDAR)
Drop: 19.1m (LIDAR)
Myrddyn Phillips (September 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Pen yr Allt (SH 429 917) - 56th significant name change
Hill Reclassifications post for Pen yr Allt
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 Pen yr Allt (SO 429 917) |
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. 69m) notation with 15m of drop, based on the 69m 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 54m bwlch spot height that appears on the Ordnance Survey 1:25,000 Explorer map.
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The full details for the hill are:
Group: Ynys Môn
Name: Pen yr Allt
Previously Listed Name: Pt. 69m
OS 1:50,000 map: 114
Summit Height: 69.4m (LIDAR)
Summit Grid Reference: SH 42925 91717 (LIDAR)
Bwlch Height: 55.1m (LIDAR)
Bwlch Grid Reference: SH 43244 91030 (LIDAR)
Drop: 14.3m (LIDAR)
Myrddyn Phillips (September 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Clegyrog Uchaf (SH 388 891) - 55th 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. 97m) notation with an estimated c 14m of drop, based on the 97m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 83m bwlch height, based on interpolation of 5m contouring between 80m – 85m.
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The full details for the hill are:
Group: Ynys Môn
Name: Clegyrog Uchaf
Previously Listed Name: Pt. 97m
OS 1:50,000 map: 114
Summit Height: 97m (spot height)
Summit Grid Reference: SH 38878 89188 (spot height)
Bwlch Height: c 83m (interpolation)
Bwlch Grid Reference: SH 38810 89397 (interpolation)
Drop: c 14m (spot height summit and interpolated bwlch)
Myrddyn Phillips (September 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Clegyrog Uchaf (SH 383 888) - 54th 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. 93m) notation with an estimated c 15m of drop, based on the 93m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 78m bwlch height, based on interpolation of 5m contouring between 75m – 80m.
Extract from the Ordnance Survey 1:25,000 Explorer map |
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The full details for the hill are:
Group: Ynys Môn
Name: Clegyrog Uchaf
Previously Listed Name: Pt. 93m
OS 1:50,000 map: 114
Summit Height: 93m (spot height)
Summit Grid Reference: SH 38385 88818 (spot height)
Bwlch Height: c 78m (interpolation)
Bwlch Grid Reference: SH 38736 89019 (interpolation)
Drop: c 15m (spot height summit and interpolated bwlch)
Myrddyn Phillips (September 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Bryn Du (SH 398 896) - 53rd 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. 86m) notation with an estimated c 14m of drop, based on the 86m 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 72m bwlch height, based on interpolation of 5m contouring between 70m – 75m that appears on the Ordnance Survey 1:25,000 Explorer map.
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The full details for the hill are:
Group: Ynys Môn
Name: Bryn Du
Previously Listed Name: Pt. 86m
OS 1:50,000 map: 114
Summit Height: 86m (spot height)
Summit Grid Reference: SH 39843 89644 (spot height)
Bwlch Height: c 72m (interpolation)
Bwlch Grid Reference: SH 39722 88861 (interpolation)
Drop: c 14m (spot height summit and interpolated bwlch)
Myrddyn Phillips (September 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Tyddyn Creigiau (SH 367 888) - 52nd 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. 89m) notation with an estimated c 17m of drop, based on the 89m 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 72m bwlch height, based on interpolation of 5m contouring between 70m – 75m that appears on the Ordnance Survey 1:25,000 Explorer map.
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The full details for the hill are:
Group: Ynys Môn
Name: Tyddyn Creigiau
Previously Listed Name: Pt. 89m
OS 1:50,000 map: 114
Summit Height: 89m (spot height)
Summit Grid Reference: SH 36779 88865 (spot height)
Bwlch Height: c 72m (interpolation)
Bwlch Grid Reference: SH 36042 88822 (interpolation)
Drop: c 17m (spot height summit and interpolated bwlch)
Myrddyn Phillips (September 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Pen Ucheldref (SH 349 882) - 51st significant name change
Significant Height Revisions post for Pen Ucheldref
Summit Relocations post for Pen Ucheldref
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 Pen Ucheldref (SH 349 882) |
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 90m) notation with an estimated c 23m of drop, based on an estimated c 90m summit height and an estimated c 67m bwlch height, with both heights based on interpolation of 5m contouring that appears on the Ordnance Survey 1:25,000 Explorer map, with the 85m upper summit contour mistaken for 90m.
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The full details for the hill are:
Group: Ynys Môn
Name: Pen Ucheldref
Previously Listed Name: Pt. c 90m
OS 1:50,000 map: 114
Summit Height: 85.4m (LIDAR)
Summit Grid Reference: SH 34917 88259 (LIDAR)
Bwlch Height: c 67m (interpolation)
Bwlch Grid Reference: SH 35183 88544 (interpolation)
Drop: c 18m (LIDAR summit and interpolated bwlch)
Myrddyn Phillips (August 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Berth (SH 324 875) - 50th 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. 73m) notation with an estimated c 16m of drop, based on the 73m 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 57m bwlch height based on interpolation of 5m contouring between 55m – 60m that appears on the Ordnance Survey 1:25,000 Explorer map.
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The full details for the hill are:
Group: Ynys Môn
Name: Berth
Previously Listed Name: Pt. 73m
OS 1:50,000 map: 114
Summit Height: 73m (spot height)
Summit Grid Reference: SH 32407 87535 (spot height)
Bwlch Height: c 57m (interpolation)
Bwlch Grid Reference: SH 32675 87683 (interpolation)
Drop: c 16m (spot height summit and interpolated bwlch)
Myrddyn Phillips (August 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Cae Summer House (SH 307 880) - 49th 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. 72m) notation with an estimated c 19m of drop, based on the 72m 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 53m bwlch height based on interpolation of 5m contouring between 50m – 55m that appears on the Ordnance Survey 1:25,000 Explorer map.
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The full details for the hill are:
Group: Ynys Môn
Name: Cae Summer House
Previously Listed Name: Pt. 72m
OS 1:50,000 map: 114
Summit Height: 72m (spot height)
Summit Grid Reference: SH 30776 88017 (spot height)
Bwlch Height: c 53m (interpolation)
Bwlch Grid Reference: SH 31412 88572 (interpolation)
Drop: c 19m (spot height summit and interpolated bwlch)
Myrddyn Phillips (August 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Meiriogen (SH 354 857) - 48th 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. 66m) notation with 19m of drop, based on the 66m 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 47m bwlch spot height that appears on the Ordnance Survey 1:25,000 Explorer map.
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The full details for the hill are:
Group: Ynys Môn
Name: Meiriogen
Previously Listed Name: Pt. 66m
OS 1:50,000 map: 114
Summit Height: 66m (spot height)
Summit Grid Reference: SH 35461 85799 (spot height)
Bwlch Height: 47m (spot height)
Bwlch Grid Reference: SH 35708 86002 (spot height)
Drop: 19m (spot height summit and bwlch)
Myrddyn Phillips (August 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Nanner (SH 333 916) - 47th 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 45m) notation with an estimated c 17m of drop, based on an estimated c 45m summit height from interpolation of 5m contouring that appears on the Ordnance Survey 1:25,000 Explorer map, and the 28m 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.
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The full details for the hill are:
Group: Ynys Môn
Name: Nanner
Previously Listed Name: Pt. c 45m
OS 1:50,000 map: 114
Summit Height: 45m (spot height)
Summit Grid Reference: SH 33335 91687 (spot height)
Bwlch Height: 28m (spot height)
Bwlch Grid Reference: SH 33176 91439 (spot height)
Drop: 17m (spot height summit and bwlch)
Myrddyn Phillips (August 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Bwlch (SH 350 914) - 46th 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 Bwlch (SH 350 914) |
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. 44m) notation with an estimated c 16m of drop, based on the 44m 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 28m bwlch height based on interpolation of 5m contouring between 25m – 30m that appear on the Ordnance Survey 1:25,000 Explorer map.
Extract from the Ordnance Survey 1:25,000 Explorer map |
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The full details for the hill are:
Group: Ynys Môn
Name: Bwlch
Previously Listed Name: Pt. 44m
OS 1:50,000 map: 114
Summit Height: 45.5m (LIDAR)
Summit Grid Reference: SH 35072 91457 (LIDAR)
Bwlch Height: c 28m (interpolation)
Bwlch Grid Reference: SH 35481 91095 (interpolation)
Drop: c 18m (LIDAR summit and interpolated bwlch)
Myrddyn Phillips (August 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Pen y Groes or Glanrafon (SH 343 901) - 45th 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 Pen y Groes or Glanrafon (SH 343 901) |
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. 62m) notation with 16m of drop, based on the 62m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and the 46m 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 |
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The full details for the hill are:
Group: Ynys Môn
Name: Pen y Groes or Glanrafon
Previously Listed Name: Pt. 62m
OS 1:50,000 map: 114
Summit Height: 61.3m (LIDAR)
Summit Grid Reference: SH 34328 90179 (LIDAR)
Bwlch Height: 46m (spot height)
Bwlch Grid Reference: SH 34632 90351 (interpolation from available LIDAR)
Drop: 15m (LIDAR summit and spot height bwlch)
Myrddyn Phillips (August 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Cromlech (SH 365 924) - 44th 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 confirmed by LIDAR analysis conducted by Myrddyn Phillips.
LIDAR image of Cromlech (SH 365 924) |
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. 49m) notation with an estimated c 21m of drop, based on the 49m summit spot height and an estimated c 28m bwlch height based on interpolation of 5m contouring between 25m – 30m that appears on the Ordnance Survey 1:25,000 Explorer map.
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The full details for the hill are:
Group: Ynys Môn
Name: Cromlech
Previously Listed Name: Pt. 49m
OS 1:50,000 map: 114
Summit Height: 47.95m (LIDAR)
Summit Grid Reference: SH 36568 92457 (LIDAR)
Bwlch Height: 28.1m (LIDAR)
Bwlch Grid Reference: SH 36561 91044 (LIDAR)
Drop: 19.8m (LIDAR)
Myrddyn Phillips (August 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Bod Orsedd (SH 364 916) - 43rd significant name change
Hill Reclassifications post for Bod Orsedd
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 confirmed by LIDAR analysis conducted by Myrddyn Phillips.
LIDAR image of Bod Orsedd (SH 364 916) |
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. 44m) notation with an estimated c 16m of drop, based on the 44m 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 28m bwlch height based on interpolation of 5m contouring between 25m – 30m that appears on the Ordnance Survey 1:25,000 Explorer map.
Extract from the Ordnance Survey 1:25,000 Explorer map |
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The full details for the hill are:
Group: Ynys Môn
Name: Bod Orsedd
Previously Listed Name: Pt. 44m
OS 1:50,000 map: 114
Summit Height: 43.3m (LIDAR)
Summit Grid Reference: SH 36400 91688 (LIDAR)
Bwlch Height: 28.8m (LIDAR)
Bwlch Grid Reference: SH 36530 92019 & SH 36531 92017 (LIDAR)
Drop: 14.5m (LIDAR)
Myrddyn Phillips (August 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Carrog (SH 373 926) - 42nd 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 confirmed by LIDAR analysis conducted by Myrddyn Phillips.
LIDAR image of Carrog (SH 373 926) |
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. 43m) notation with 17m of drop, based on the 43m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and the 26m 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 |
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The full details for the hill are:
Group: Ynys Môn
Name: Carrog
Previously Listed Name: Pt. 43m
OS 1:50,000 map: 114
Summit Height: 42.7m (LIDAR)
Summit Grid Reference: SH 37327 92635 (LIDAR)
Bwlch Height: 25.8m (LIDAR)
Bwlch Grid Reference: SH 37058 91986 (LIDAR)
Drop: 16.9m (LIDAR)
Myrddyn Phillips (August 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Tregynrig Fawr (SH 402 924) - 41st significant name change
Significant Height Revisions post for Tregynrig Fawr
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 confirmed by LIDAR analysis conducted by Myrddyn Phillips.
LIDAR image of Tregynrig Fawr (SH 402 924) |
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 64m) notation with an estimated c 16m of drop, based on an estimated c 64m summit height and an estimated c 48m bwlch height, with both heights based on interpolation of 5m contouring that appears on the Ordnance Survey 1:25,000 Explorer map.
Extract from the Ordnance Survey 1:25,000 Explorer map |
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The full details for the hill are:
Group: Ynys Môn
Name: Tregynrig Fawr
Previously Listed Name: Pt. c 64m
OS 1:50,000 map: 114
Summit Height: 66.5m (LIDAR)
Summit Grid Reference: SH 40239 92455 & SH 40241 92457 (LIDAR)
Bwlch Height: 47.1m (LIDAR)
Bwlch Grid Reference: SH 40184 93235 (LIDAR)
Drop: 19.3m (LIDAR)
Myrddyn Phillips (August 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Nant y Frân (SH 389 923) - 40th significant name change
Hill Reclassifications post for Nant y Frân
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 Nant y Frân (SH 389 923) |
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. 49m) notation with 15m of drop, based on the 49m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and the 34m 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 |
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The full details for the hill are:
Group: Ynys Môn
Name: Nant y Frân
Previously Listed Name: Pt. 49m
OS 1:50,000 map: 114
Summit Height: 49.4m (LIDAR)
Summit Grid Reference: SH 38928 92356 (LIDAR)
Bwlch Height: 34.7m (LIDAR)
Bwlch Grid Reference: SH 38859 92572 (LIDAR)
Drop: 14.7m (LIDAR)
Myrddyn Phillips (August 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Neuadd Fawr (SH 388 933) - 39th 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 |
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Magic Maps website |
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Extract from the apportionments |
The full details for the hill are:
Group: Ynys Môn
Name: Neuadd Fawr
Previously Listed Name: Pt. 64m
OS 1:50,000 map: 114
Summit Height: 64m (spot height)
Summit Grid Reference: SH 38856 93336 (spot height)
Bwlch Height: c 48m (interpolation)
Bwlch Grid Reference: SH 38968 93549 (interpolation)
Drop: c 16m (spot height summit and interpolated bwlch)
Myrddyn Phillips (July 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Betws (SH 392 937) - 38th 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 71m) notation with an estimated c 17m of drop, based on an estimated c 71m summit height, based on interpolation of 5m contouring that appear on the Ordnance Survey 1:25,000 Explorer map and the 54m 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 WalkLakes website |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Ynys Môn
Name: Betws
Previously Listed Name: Pt. c 71m
OS 1:50,000 map: 114
Summit Height: 72m (spot height)
Summit Grid Reference: SH 39299 93790 (spot height)
Bwlch Height: 53m (spot height)
Bwlch Grid Reference: SH 39758 93691 (spot height)
Drop: 19m (spot height summit and bwlch)
Myrddyn Phillips (July 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Llanlleiana Park (SH 386 946) - 37th significant name change
Hill Reclassifications post for Llanlleiana Park
Significant Height Revisions post for Llanlleiana Park
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. 44m) notation with an estimated c 16m of drop, based on the 44m 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 28m bwlch height based on interpolation of 5m contouring between 25m – 30m that appear 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 |
Extract from the apportionments |
The full details for the hill are:
Group: Ynys Môn
Name: Llanlleiana Park
Previously Listed Name: Pt. 44m
OS 1:50,000 map: 114
Summit Height: 46m (spot height)
Summit Grid Reference: SH 38614 94695 (spot height)
Bwlch Height: c 32m (interpolation)
Bwlch Grid Reference: SH 38606 94628 (interpolation)
Drop: c 14m (spot height summit and interpolated bwlch)
Myrddyn Phillips (July 2021)
Mapping Mountains - Significant Name Changes - The Welsh P15s
Llanlleiana Park (SH 388 946) - 36th significant name change
Significant Height Revisions post for Llanlleiana Park
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 52m) notation with an estimated c 15m of drop based on an estimated c 52m summit height and an estimated c 37m bwlch height, with both heights based on interpolation of 5m contouring that appears on the Ordnance 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: Llanlleiana Park
Previously Listed Name: Pt. c 52m
OS 1:50,000 map: 114
Summit Height: 55m (spot height)
Summit Grid Reference: SH 38859 94607 (spot height)
Bwlch Height: c 38m (interpolation)
Bwlch Grid Reference: SH 38902 94509 (interpolation)
Drop: c 17m (spot height summit and interpolated bwlch)
Myrddyn Phillips (July 2021)
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