200m Twmpau – Significant Name Changes
Mapping Mountains - Significant Name Changes - 200m Twmpau
Grogwynion (SN 720 725) - 70th significant name change
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, 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.
Grogwynion (SN 720 725) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
Extract from the Ordnance Survey 1:25,000 Explorer map |
Castell Graigwynion | 289m | SN721724 | 135/147 | 213 | Included by contour configuration |
This was one of a number of hills visited during the day and I approached it from the north calling at the farm of Pengrogwynion, which is positioned directly under the hill to its north-east. The front door was opened by Wendy Croket, I introduced myself and explained my interest in upland place-names and in particular the hill above the farm. We talked at length and she told me about the ancient fortifications and after asking permission to visit, she kindly told me the best way up. During the conversation she told me that the name of the hill is Grogwynion with the word Castell purely signifying the ancient hill fort as being the castle of the hill of Grogwynion. We were soon joined by Caredig, who I then later met when descending from my last hill of the day.
Caredig and Wendy |
The full details for the hill are:
Group: Elenydd
Name: Grogwynion
Previously Listed Name: Castell Graigwynion
OS 1:50,000 map: 135, 147
Summit Height: 288.6m (converted to OSGM15, Trimble GeoXH 6000)
Summit Grid Reference: SN 72068 72507 (Trimble GeoXH 6000)
Bwlch Height: 255.8m (LIDAR)
Bwlch Grid Reference: SN 71921 72581 (LIDAR)
Drop: 32.7m (Trimble GeoXH 6000 summit and LIDAR bwlch)
Myrddyn Phillips (September 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Cae Coch (SJ 137 066) - 69th significant name change
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips.
Cae Coch (SJ 137 066) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
The hill appeared in the original 200m Welsh P30 list on Geoff Crowder’s v-g.me website under the invented and transposed name of Pen y Hafod Seller, with an accompanying note stating; Name from buildings to the South-East.
Pen y Hafod Seller | 260c | SJ137066 | 125 | 215/239 | 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 prefix it with the words Pen y. This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Carnedd Wen
Name: Cae Coch
Previously Listed Name: Pen y Hafod Seller
OS 1:50,000 map: 125
Summit Height: 263.3m (converted to OSGM15, Trimble GeoXH 6000)
Summit Grid Reference: SJ 13715 06610 (Trimble GeoXH 6000)
Bwlch Height: 193.7m (LIDAR)
Bwlch Grid Reference: SJ 13757 06183 (LIDAR)
Drop: 69.6m (Trimble GeoXH 6000 summit and LIDAR bwlch)
Myrddyn Phillips (July 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Cae’r Block (SJ 115 067) - 68th significant name change
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips.
Cae'r Block (SJ 115 067) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
The hill appeared in the original 200m Welsh P30 list on Geoff Crowder’s v-g.me website under the transposed name of Cil-yr-ych, which is a prominent name that appears north-eastward of this hill’s summit on the contemporary Ordnance Survey 1:25,000 Explorer map.
Cil-yr-ych | 233m | SJ116067 | 125 | 215/239 |
During my early hill listing I paid little regard to name placement on the map, or the meaning of names and to what feature the name was appropriately applied to. Therefore, I prioritised names for listing purposes that I now understand are either inappropriate or where another name is viewed as being more appropriate.
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: Carnedd Wen
Name: Cae’r Block
Previously Listed Name: Cil-yr-ych
OS 1:50,000 map: 125
Summit Height: 232.6m (converted to OSGM15, Trimble GeoXH 6000)
Summit Grid Reference: SJ 11567 06755 (Trimble GeoXH 6000)
Bwlch Height: 199.0m (LIDAR)
Bwlch Grid Reference: SJ 11283 06315 (LIDAR)
Drop: 33.6m (Trimble GeoXH 6000 summit and LIDAR bwlch)
Myrddyn Phillips (July 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Llwynderw Hill (SJ 196 036) - 67th significant name change
Survey post for Llwynderw Hill
Summit Relocations post for Llwynderw Hill
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, 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.
LIDAR image of Llwynderw Hill (SH 196 036) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
When the original 200m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was listed under the invented and transposed name of Pen y Belan, with an accompanying note stating; Name from surrounding district.
Pen y Belan | 238m | SJ196036 | 136 | 216 | Name from surrounding district |
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 the district where the hill is situated and add the words Pen y 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.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Therefore, the name this hill is now listed by in the 200m Twmpau is Llwynderw Hill, and this was derived from local enquiry.
The full details for the hill are:
Group: Carnedd Wen
Name: Llwynderw Hill
Previously Listed Name: Pen y Belan
OS 1:50,000 map: 136
Summit Height: 237.9m (converted to OSGM15, Trimble GeoXH 6000)
Summit Grid Reference: SJ 19600 03662 (Trimble GeoXH 6000)
Bwlch Height: 159.7m (LIDAR)
Bwlch Grid Reference: SJ 18827 03989 (LIDAR)
Drop: 78.3m (Trimble GeoXH 6000 summit and LIDAR bwlch)
Myrddyn Phillips (June 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Cefn Uchaf (SJ 157 072) - 66th significant name change
Hill Reclassifications post for Cefn Uchaf
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips.
Cefn Uchaf (SJ 157 072) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
The hill appeared in the original 200m Welsh P30 list on Geoff Crowder’s v-g.me website under the transposed name of Fron Hydan [sic], which is a prominent name that appears near this hill on contemporary Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer maps.
Fron Hydan | 262m | SJ157073 | 125 | 215/239 |
During my early hill listing I paid little regard to name placement on the map, or the meaning of names and to what feature the name was appropriately applied to. Therefore, I prioritised names for listing purposes that I now understand are either inappropriate or where another name is viewed as being more appropriate.
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: Carnedd Wen
Name: Cefn Uchaf
Previously Listed Name: Fron Hydan
OS 1:50,000 map: 125
Summit Height: 261.8m (converted to OSGM15, Trimble GeoXH 6000)
Summit Grid Reference: SJ 15739 07264 (Trimble GeoXH 6000)
Bwlch Height: 235.1m (LIDAR)
Bwlch Grid Reference: SJ 15745 07416 (LIDAR)
Drop: 26.6m (Trimble GeoXH 6000 summit and LIDAR bwlch)
Myrddyn Phillips (June 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Quarry Field (SJ 155 075) - 65th significant name change
Hill Reclassifications post for Quarry Field
Significant Height Revisions post for Quarry Field
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips.
Quarry Field (SJ 155 075) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
The hill appeared in the original 200m Welsh P30 list on Geoff Crowder’s v-g.me website under the invented and transposed name of Pen y Godor, with an accompanying note stating; Name from wood to the North-East.
Pen y Godor | 260c | SJ155075 | 125 | 215/239 | Name from wood to the North-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 part of the name of a near wood and prefix it with the words Pen y. This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Carnedd Wen
Name: Quarry Field
Previously Listed Name: Pen y Godor
OS 1:50,000 map: 125
Summit Height: 268.5m (converted to OSGM15, Trimble GeoXH 6000)
Summit Grid Reference: SJ 15530 07552 (Trimble GeoXH 6000)
Bwlch Height: 209.6m (LIDAR)
Bwlch Grid Reference: SJ 16489 07601 (LIDAR)
Drop: 58.9m (Trimble GeoXH 6000 summit and LIDAR bwlch)
Myrddyn Phillips (June 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Cae Pen y Maen (SN 656 694) - 64th significant name change
Survey post for Cae Pen y Maen
Hill Reclassifications post for Cae Pen y Maen
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, 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.
LIDAR image of Cae Pen y Maen (SN 656 694) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
The hill appeared in the original Welsh 200m P30 list on Geoff Crowder’s v-g.me website under the transposed name of Comins Pen-y-banc, which is a prominent name positioned to the south-east of this hill’s summit on contemporary Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer maps. As this name implies this refers to named common land that is now indicated by its open access designation and which does not take in the summit of this hill.
Comins Pen-y-banc | 297m | SN656694 | 135 | 199/213 | Trig pillar at 295m to the North |
During my early hill listing I paid little regard to name placement on the map, or the meaning of names and to what feature the name was appropriately applied to. Therefore, I prioritised names for listing purposes that I now understand are either inappropriate or where another name is viewed as being more appropriate.
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: Elenydd
Name: Cae Pen y Maen
Previously Listed Name: Comins Pen-y-banc
OS 1:50,000 map: 135
Summit Height: 296.6m (converted to OSGM15)
Summit Grid Reference: SN 65690 69496
Bwlch Height: 268.8m (converted to OSGM15)
Bwlch Grid Reference: SN 66401 68910
Drop: 27.9m
Myrddyn Phillips (May 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Banc (SN 598 714) - 63rd significant name change
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, 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.
LIDAR image of Banc (SN 598 714) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
The hill appeared in the original Welsh 200m P30 list on Geoff Crowder’s v-g.me website under the transposed name of Penbryn, with an accompanying note stating; Name from buildings to the West.
Penbryn | 206m | SN598714 | 135 | 213 | Name from buildings to the West. |
During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day. My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of a near farm and use it for that of the hill. This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Elenydd
Name: Banc
Previously Listed Name: Penbryn
OS 1:50,000 map: 135
Summit Height: 204.4m (converted to OSGM15, Trimble GeoXH 6000)
Summit Grid Reference: SN 59804 71470 (Trimble GeoXH 6000)
Bwlch Height: 170.1m (LIDAR)
Bwlch Grid Reference: SN 62289 71880 (LIDAR)
Drop: 34.4m (Trimble GeoXH 6000 summit and LIDAR bwlch)
Myrddyn Phillips (May 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Banc y Maen Rochorlem (SN 675 691) - 62nd significant name change
Survey post for Banc y Maen Rochorlem
Hill Reclassifications post for Banc y Maen Rochorlem
Significant Height Revisions post for Banc y Maen Rochorlem
Summit Relocations post for Banc y Maen Rochorlem
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, 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.
The summit of Banc y Maen Rochorlem (SN 675 691) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
The hill appeared in the original Welsh 200m P30 list on Geoff Crowder’s v-g.me website under the invented and transposed name of Allt y Pantyddafad, with an accompanying note stating; Name from buildings to the North-East [sic].
Allt y Pantyddafad | 290c | SN676692 | 135 | 199/213 | Name from buildings to the North-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 words Allt y 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.
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: Elenydd
Name: Banc y Maen Rochorlem
Previously Listed Name: Allt y Pantyddafad
OS 1:50,000 map: 135
Summit Height: 299.3m (converted to OSGM15, Trimble GeoXH 6000)
Summit Grid Reference: SN 67513 69184 (Trimble GeoXH 6000)
Bwlch Height: 206.2m (LIDAR)
Bwlch Grid Reference: SN 69578 68344 (LIDAR)
Drop: 93.1m (Trimble GeoXH 6000 summit and LIDAR bwlch)
Myrddyn Phillips (April 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Banc (SN 674 702) - 61st significant name change
Summit Relocations post for Banc
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips.
Banc (SN 674 702) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
Extract from the Ordnance Survey 1:25,000 Explorer map |
Brynarth | 289m | SN674702 | 135 | 213 | Name from buildings to the South-West |
During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day. My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of a near farm and use it for that of the hill. This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found.
This was one of a number of hills visited during the day and I approached it via a narrow paved road that ends at the farm of Penlan, from here a track continued in the same direction toward the farm of Tynbwlch.
Walking along the track toward the hill a quad bike appeared from an adjacent field and I flagged it down. I introduced myself to Joseph Cook, who along with his father farms this land. I explained my interest in his hill and its name. Joseph told me that they know it as Banc, and happy with another name documented I thanked him, asked permission to visit the summit, which was duly granted with Joseph kindly directing me toward the best ascent route using connecting gates through the various fields toward the summit of the hill.
Joseph Cook of Tynbwlch |
The full details for the hill are:
Group: Elenydd
Name: Banc
Previously Listed Name: Brynarth
OS 1:50,000 map: 135
Summit Height: 289.4m (converted to OSGM15, Trimble GeoXH 6000)
Summit Grid Reference: SN 67427 70214 (Trimble GeoXH 6000)
Bwlch Height: 234.4m (LIDAR)
Bwlch Grid Reference: SN 67366 69677 (LIDAR)
Drop: 55.05m (Trimble GeoXH 6000 summit and LIDAR bwlch)
Myrddyn Phillips (April 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Cefn Dinas (SO 129 964) - 60th significant name change
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips.
LIDAR image of Cefn Dinas (SO 129 964) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
When the original 200m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was listed under the invented and transposed name of Bryn y Cefn-dinas, with an accompanying note stating; Name from coppice to the North-West.
Bryn y Cefn-dinas | 223m | SO130964 | 136 | 215 | Name from coppice to the North-West |
During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day. My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of a near wood and add the words Bryn y 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.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Therefore, the name this hill is now listed by in the 200m Twmpau is Cefn Dinas, and this was derived from local enquiry.
The full details for the hill are:
Group: Carnedd Wen
Name: Cefn Dinas
Previously Listed Name: Bryn y Cefn-dinas
OS 1:50,000 map: 136
Summit Height: 221.3m (converted to OSGM15, Trimble GeoXH 6000)
Summit Grid Reference: SO 12992 96463 (Trimble GeoXH 6000)
Bwlch Height: 176.6m (LIDAR)
Bwlch Grid Reference: SO 13331 96892 (LIDAR)
Drop: 44.7m (Trimble GeoXH 6000 summit and LIDAR bwlch)
Myrddyn Phillips (April 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Maes y Cefn (SN 797 954) - 59th significant name change
Hill Reclassifications post for Maes y Cefn
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, 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 Maes y Cefn (SN 797 954) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
The hill appeared in the original Welsh 200m P30 list on Geoff Crowder’s v-g.me website under the invented and transposed name of Mynydd Rhiw-gam, with an accompanying note stating; Name from wood to the West.
Mynydd Rhiw-gam | 252m | SN797955 | 135 | 215 | Name from wood to the West |
During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day. My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of a near wood and add the word Mynydd 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.
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: Maes y Cefn
Previously Listed Name: Mynydd Rhiw-gam
OS 1:50,000 map: 135
Summit Height: 250.9m (LIDAR)
Summit Grid Reference: SN 79761 95462 (LIDAR)
Bwlch Height: 220.9m (LIDAR)
Bwlch Grid Reference: SN 79484 95138 (LIDAR)
Drop: 30.0m (LIDAR)
Myrddyn Phillips (April 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Ffridd (SN 808 977) - 58th significant name change
Hill Reclassifications post for Ffridd
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, 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 Ffridd (SN 808 977) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
The hill appeared in the original Welsh 200m P30 list on Geoff Crowder’s v-g.me website under the transposed name of Penyglog, with an accompanying note stating; Name from buildings to the North-East.
Penyglog | 230c | SN809977 | 135/136 | 215 | Name from buildings to the North-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 near farm and use it for that of the hill. This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Pumlumon
Name: Ffridd
Previously Listed Name: Penyglog
OS 1:50,000 map: 135, 136
Summit Height: 236.6m (LIDAR)
Summit Grid Reference: SN 80899 97705 (LIDAR)
Bwlch Height: 202.5m (LIDAR)
Bwlch Grid Reference: SN 81383 97749 (LIDAR)
Drop: 34.1m (LIDAR)
Myrddyn Phillips (March 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Stingwern Wood (SJ 145 000) - 57th significant name change
Survey post for Stingwern Wood
Significant Height Revisions post for Stingwern Wood
Summit Relocations post for Stingwern Wood
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, 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 a Trimble GeoXH 6000 survey conducted by Myrddyn Phillips.
Stingwern Wood (SJ 145 000) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
The qualifying hill appeared in the original 200m Welsh P30 list on Geoff Crowder’s v-g.me website listed at SJ 154 997 and under the invented and transposed name of Pen Cefnblewog, with an accompanying note stating; Name from buildings to the East.
Pen Cefnblewog | 251m | SO154997 | 136 | 215 | Name from buildings to the 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. This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Therefore, the name this hill is now listed by in the 200m Twmpau is Stingwern Wood, and this was derived from the Ordnance Survey 1:25,000 Explorer map.
The full details for the hill are:
Group: Carnedd Wen
Name: Stingwern Wood
Previously Listed Name: Pen Cefnblewog
OS 1:50,000 map: 136
Summit Height: 260.0m (converted to OSGM15, Trimble GeoXH 6000)
Summit Grid Reference: SJ 14514 00063 (Trimble GeoXH 6000)
Bwlch Height: c 198m (interpolation)
Bwlch Grid Reference: SJ 14414 00402 (interpolation)
Drop: c 62m (Trimble GeoXH 6000 summit and interpolated bwlch)
Myrddyn Phillips (March 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Parkhouse Rocks (SO 499 034) - 56th significant name change
Summit Relocations post for Parkhouse Rocks
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill derived by Joe Nuttall who produced a summit analysis programme using LIDAR, and then by LIDAR analysis initially conducted by Jim Bloomer and subsequently by Myrddyn Phillips.
LIDAR image of Parkhouse Rocks (SO 499 034) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
The qualifying hill appeared in the original Welsh 200m P30 list on Geoff Crowder’s v-g.me website under the transposed and invented name of Ninewells Wood Top, with an accompanying note stating; Name from wood to the North, and listed with a 274m summit height, based on the spot height that appears at SO 509 033 on the Ordnance Survey 1:25,000 Explorer map. LIDAR analysis has subsequently moved its summit position and hence its name change.
Ninewells Wood Top | 274m | SO509034 | 162 | 14 | Name from wood to the North |
During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day. My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of near wood and add the word Top 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.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Ordnance Survey One-Inch 'Old Series' map |
Extract from the Ordnance Surveys series of Six-Inch maps |
The full details for the hill are:
Group: Gwent Is Coed
Name: Parkhouse Rocks
Previously Listed Name: Ninewells Wood Top
OS 1:50,000 map: 162
Summit Height: 276.1m (LIDAR)
Summit Grid Reference: SO 49959 03439 (LIDAR)
Bwlch Height: 235.2m (LIDAR)
Bwlch Grid Reference: SO 50941 04537 (LIDAR)
Drop: 40.9m (LIDAR)
Myrddyn Phillips (March 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Mynydd Cefn Maes Mawr (SN 728 985) - 55th significant name change
Hill Reclassifications post for Mynydd Cefn Maes Mawr
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips.
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
The hill appeared in the original Welsh 200m P30 list on Geoff Crowder’s v-g.me website under the name of Mynydd Cae-du, which is a prominent name that appears on the contemporary Ordnance Survey 1:25,000 Explorer map close to the summit of this hill.
Mynydd Cae-du | 220c | SN728985 | 135 | 23 |
During my early hill listing I paid little regard to name placement on the map, or the meaning of names and to what feature the name was appropriately applied to. Therefore I prioritised names for listing purposes that I now understand are either inappropriate or where another name is viewed as being more appropriate.
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: Banc Llechwedd Mawr
Name: Mynydd Cefn Maes Mawr
Previously Listed Name: Mynydd Cae-du
OS 1:50,000 map: 135
Summit Height: 227.0m (LIDAR)
Summit Grid Reference: SN 72879 98501 (LIDAR)
Bwlch Height: 193.2m (LIDAR)
Bwlch Grid Reference: SN 73168 98304 (LIDAR)
Drop: 33.8m (LIDAR)
Myrddyn Phillips (February 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Cow Pasture (SO 110 977) - 54th significant name change
Significant Height Revisions post for Cow Pasture
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips.
Cow Pasture (SO 110 977) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
The hill appeared in the original 200m Welsh P30 list on Geoff Crowder’s v-g.me website under the invented and transposed name of Bryn y Fraithwen, with an accompanying note stating; Name from buildings to the South-West.
Bryn y Fraithwen | 213m | SO111977 | 136 | 215 | Name from buildings to the South-West |
During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day. My preference was to use farm names and put Pen, Bryn or Moel in front of them. This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Carnedd Wen
Name: Cow Pasture
Previously Listed Name: Bryn y Fraithwen
OS 1:50,000 map: 136
Summit Height: 215.5m (converted to OSGM15, Trimble GeoXH 6000)
Summit Grid Reference: SO 11094 97769 (Trimble GeoXH 6000)
Bwlch Height: 190.2m (LIDAR)
Bwlch Grid Reference: SO 11043 97985 (LIDAR)
Drop: 25.3m (Trimble GeoXH 6000 summit and LIDAR bwlch)
Myrddyn Phillips (February 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Henfaes Common (SO 120 974) - 53rd significant name change
Survey post for Henfaes Common
Hill Reclassifications post for Henfaes Common
There has been a Significant Name Change to a hill that was listed in the 200m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips.
Henfaes Common (SO 120 974) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
When the original 200m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was not included in the accompanying Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category.
When the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-assessed and it was listed under the point (Pt. 214m) notation with 20m of drop, based on the 214m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map, and the 194m bwlch spot height that appeared on the Ordnance Survey Vector Map Local that was 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: Carnedd Wen
Name: Henfaes Common
Previously Listed Name: Pt. 214m
OS 1:50,000 map: 137
Summit Height: 215.2m (converted to OSGM15, Trimble GeoXH 6000)
Summit Grid Reference: SO 12003 97409 (Trimble GeoXH 6000)
Bwlch Height: 198.8m (LIDAR)
Bwlch Grid Reference: SO 12171 97587 (LIDAR)
Drop: 16.4m (Trimble GeoXH 6000 summit and LIDAR bwlch)
Myrddyn Phillips (February 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Cae'r Beudy (SN 799 977) - 52nd significant name change
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, 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 Cae'r Beudy (SN 799 977) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
The hill appeared in the original Welsh 200m P30 list on Geoff Crowder’s v-g.me website under the invented and transposed name of Mynydd y Dyffryn, with an accompanying note stating; Name from wood at summit.
Mynydd y Dyffryn | 217m | SN799977 | 135 | 215 | Name from wood at summit. |
During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day. My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance prefix part of the name of a wood with the word Mynydd. This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Pumlumon
Name: Cae'r Beudy
Previously Listed Name: Mynydd y Dyffryn
OS 1:50,000 map: 135
Summit Height: 216.6m (LIDAR)
Summit Grid Reference: SN 79947 97748 (LIDAR)
Bwlch Height: 185.3m (LIDAR)
Bwlch Grid Reference: SN 80128 97454 (LIDAR)
Drop: 31.4m (LIDAR)
My thanks to Aled Williams for advice relating to this name
Myrddyn Phillips (February 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Field Above The House (SO 135 990) - 51st significant name change
Survey Post for Field Above The House
Summit Relocations post for Field Above The House
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips.
Field Above The House (SO 135 990) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
When the original 200m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was listed under the transposed name of Penyffridd, with an accompanying note stating; Name from buildings to the South-East.
Penyffridd | 263m | SO136991 | 136 | 215 | 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 near farm for that of the hill. This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Gareth Jones of Penyffridd |
The full details for the hill are:
Group: Carnedd Wen
Name: Field Above The House
Previously Listed Name: Penyffridd
OS 1:50,000 map: 136
Summit Height: 264.9m (converted to OSGM15, Trimble GeoXH 6000)
Summit Grid Reference: SO 13508 99039 (Trimble GeoXH 6000)
Bwlch Height: 220.0m (LIDAR)
Bwlch Grid Reference: SO 13331 98643 (LIDAR)
Drop: 44.8m (Trimble GeoXH 6000 summit and LIDAR bwlch)
Myrddyn Phillips (January 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Moel y Lump (SO 120 997) - 50th significant name change
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, with the summit height and its location derived from a Trimble GeoXH 6000 survey conducted by Myrddyn Phillips, and the bwlch height and its location, the drop and status of the hill derived from detail on contemporary maps produced from Ordnance Survey data.
Moel y Lump (SO 120 997) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
When the original 200m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was listed under the name of Moelywigoedd, with an accompanying note stating; Name from buildings to the South-East.
Moelywigoedd | 277m | SO120997 | 136 | 215 | 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 near farm for that of the hill. This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Ian Jerman on Moel y Lump |
The full details for the hill are:
Group: Carnedd Wen
Name: Moel y Lump
Previously Listed Name: Moelywigoedd
OS 1:50,000 map: 136
Summit Height: 276.3m (converted to OSGM15, Trimble GeoXH 6000)
Summit Grid Reference: SO 12003 99753 (Trimble GeoXH 6000)
Bwlch Height: c 221m (interpolation)
Bwlch Grid Reference: SO 11982 00152 (interpolation)
Drop: c 55m (Trimble GeoXH 6000 summit and interpolated bwlch)
Myrddyn Phillips (January 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Sixteen Acres (SO 120 987) - 49th significant name change
Hill Reclassifications post for Sixteen Acres
Significant Height Revisions post for Sixteen Acres
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips.
Sixteen Acres (SO 120 987) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
When the original 200m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was not included in the accompanying Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category.
After the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-assessed and it was listed under the point (Pt. c 216m) notation with an estimated c 20m of drop, based on an estimated c 216m summit height and the 196m bwlch spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was named the Interactive Coverage Map.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Paul Marsh |
Thanking Paul I asked permission to visit the hill, which was duly granted, and continued up the lane and after surveying the summit, called at Alan Jones’s house. He was out, but his son; Ryan was extremely helpful. I explained my interest in place-names and as we were standing outside I pointed toward the top of the field that I had just visited and surveyed. Ryan told me that the field where the summit of this hill is situated is known as Sixteen Acres.
Ryan Jones |
The full details for the hill are:
Group: Carnedd Wen
Name: Sixteen Acres
Previously Listed Name: Pt. c 216m
OS 1:50,000 map: 136
Summit Height: 219.2m (converted to OSGM15, Trimble GeoXH 6000)
Summit Grid Reference: SO 12005 98756 (Trimble GeoXH 6000)
Bwlch Height: 199.1m (LIDAR)
Bwlch Grid Reference: SO 19953 98547 (LIDAR)
Drop: 20.1m (Trimble GeoXH 6000 summit and LIDAR bwlch)
Myrddyn Phillips (January 2021)
Mapping Mountains - Significant Name Changes - 200m Twmpau
Square Field (SJ 070 031) - 48th significant name change
Hill Reclassifications post for Square Field
There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips.
Square Field (SJ 070 031) |
200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 200m Twmpau by Myrddyn Phillips |
When the original 300m height band of Welsh P30 hills was published on Geoff Crowder’s v-g.me website, this hill was included in the main P30 list and listed with a 300m summit height, based on the spot height that appears on the Ordnance Survey 1:25,000 Explorer map and listed by the name of Dwyrhiw, which is a prominent name that appears to the south-east of the summit on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map.
Dwyrhiw | 300m | SJ070031 | 136 | 215 |
During my early hill listing I paid little regard to name placement on the map, or the meaning of names and to what feature the name was appropriately applied to. Therefore, I prioritised names for listing purposes that I now understand are either inappropriate or where another name is viewed as being more appropriate.
Extract from the Ordnance Survey 1:25,000 Explorer map |
John Watkins |
The full details for the hill are:
Group: Carnedd Wen
Name: Square Field
Previously Listed Name: Dwyrhiw
OS 1:50,000 map: 136
Summit Height: 299.4m (converted to OSGM15, Trimble GeoXH 6000)
Summit Grid Reference: SJ 07034 03161 (Trimble GeoXH 6000)
Bwlch Height: 253.6m (LIDAR)
Bwlch Grid Reference: SJ 06533 03161 (LIDAR)
Drop: 45.8m (Trimble GeoXH 6000 summit and LIDAR bwlch)
Pastures (SJ 080 032) |
The 200m Twmpau by Myrddyn Phillips |
Extract from the Ordnance Survey 1:25,000 Explorer map |
Ruth Davies of Llawnt Isaf |
The 200m Twmpau by Myrddyn Phillips |
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionments |
Cae Top (SJ 061 016) |
The 200m Twmpau by Myrddyn Phillips |
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionments |
Pen y Gaer (SJ 067 014) |
The 200m Twmpau by Myrddyn Phillips |
Pen y Gwladfa | 270c | SJ068014 | 136 | 215 | Name from ancient settlement at the summit |
Extract from the Ordnance Survey 1:25,000 Explorer map |
Cae Clofar Bach (SJ 069 007) |
The 200m Twmpau by Myrddyn Phillips |
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionments |
Crasty Frain (SO 109 983) |
The 200m Twmpau by Myrddyn Phillips |
Bryn y Brain | 253m | SO108982 | 136 | 215 | Name from wood to the South |
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionment |
Church Hill Common (SO 517 105) - 41st significant name change
Hill Reclassifications post for Church Hill Common
Summit Relocations post for Church Hill Common
LIDAR image of Church Hill Common (SO 517 105) |
Troypark Wood Top | 232m | SO518106 | 162 | 14 | Name from wood to the West |
Extract from the Ordnance Survey 1:25,000 Explorer map |
Mapping Mountains - Significant Name Changes - 200m Twmpau
Cae Seri (ST 448 978) - 40th significant name change
LIDAR image of Cae Seri (ST 448 978) |
Extract from the Ordnance Survey 1:25,000 Explorer map |
Mynydd-bach | 261m | ST449979 | 171 | 14 | Name from buildings to the South-West |
Extract from the Tithe map |
Extract from the apportionments |
Mynydd Llwyd (ST 433 935) - 39th significant name change
Significant Height Revisions post for Mynydd Llwyd
Extract from the Ordnance Survey 1:25,000 Explorer map |
Gray Hill | 273m | ST434935 | 171/172 | 14 | 275m on 1986 1:50000 map |
Extract from the Ordnance Survey Draft Surveyors map |
Extract from the Ordnance Survey One-Inch 'Old Series' map |
Hafod Mountain (SJ 211 630) - 38th significant name change
Survey post for Hafod Mountain
The summit of Hafod Mountain (SJ 211 630) |
Extract from the Ordnance Survey 1:25,000 Explorer map |
Bryn Gwernymynydd | 285m | SJ212631 | 117 | 265 | Name from village to the South |
Jo Owen of Hafod Issa Parc Arthur farm |
The Trimble GeoXH 6000 gathering data at the summit of Hafod Mountain |
Cymin (SO 527 125) - 37th significant name change
LIDAR image of Cymin (SO 527 125) |
Kymin Tower | 250c | SO528124 | 162 | 14 |
Extract from the Ordnance Survey 1:25,000 Explorer map |
Hill Reclassifications post for Coed y Bwnydd
Summit Relocations post for Coed y Bwnydd
Significant Height Revisions post for Coed y Bwnydd
LIDAR image of Coed y Bwnydd (SO 366 069) |
The criteria for the two listings that this name change applies to are:
200m Twmpau by Myrddyn Phillips |
Y Trechol – The Dominant Hills of Wales – Welsh P30 hills whose prominence equal or exceed half that of their absolute height. With the criteria for Lesser Dominant status being those additional Welsh P30 hills whose prominence is between one third and half that of their absolute height. The list is authored by Myrddyn Phillips with the Introduction to the start of the Mapping Mountains publication of this list appearing on the 3rd December 2015, and which is now available in its entirety on Mapping Mountains in Google Doc format.
Y Trechol - The Dominant Hills of Wales by Myrddyn Phillips |
The hill is adjoined to the Mynyddoedd Duon group of hills which are situated in the eastern part of South Wales (Region C, Sub-Region C3), and it is positioned with the Afon Wysg (River Usk) and the B4598 road to its west, the A40 road to its north and the A449 road to its east, and has the village of Raglan towards the east north-east and the town of Brynbuga (Usk) towards the south south-east.
Extract from the Ordnance Survey 1:25,000 Explorer map |
LIDAR analysis has relocated the summit position of this hill from a 196m point that was given as two spot heights that are positioned close to where the name of Clytha Hill appears on contemporary Ordnance Survey maps to a higher 201.4m summit positioned at SO 36613 06919. This higher summit is situated in woodland that is named on the map as Coed y Bwnydd. This name appears on the contemporary Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map and its position in relation to the summit of this hill is substantiated via the Ordnance Survey series of Six-Inch maps.
Extract from the Ordnance Survey series of Six-Inch maps |
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