Monthly Synopsis

 

Synopsis of all major changes detailed on Mapping Mountains during the last calendar month.  These can include new, confirmation and retrospective changes

 

Hill Reclassifications: 

Y Dinas Ucha (SH 818 826) - Welsh P15 deletion

Kirk Fell (NY 172 265) - Sub-Four exclusion

Cae Ynys Edwin (678 963) - Double Sub-Twmpau addition

Parc y Lan (SN 454 156) - 100m Sub-Twmpau addition

High Pen (NY 109 188) - Sub-Four exclusion

Pt. 449.7m (NY 276 176) - Sub-Four addition

Pt. 337.4m (SO 057 899) - Sub-Trichant addition

Significant Height Revisions: 

Cae Ynys Edwin (SN 678 963) - 30-99m Twmpau

Summit Relocations: 

Cae (SN 560 038) - 100m Twmpau

Pt. 323.6m (SN 987 839) - Y Trichant - The 300m Hills of Wales

Parc y Lan (SN 454 156) - 100m Twmpau

Significant Name Changes: 

Cae Cownog (SJ 111 135 & SJ 112 135) - 200m Twmpau

Cae West (SH 813 819) - The Welsh P15s

Pentre Hill (SJ 110 151) - 200m Twmpau

Pt. 323.6m (SN 987 839) - Y Trichant - The 300m Hills of Wales

Y Dinas Ucha (SH 818 826) - The Welsh P15s

Moel Erfyl (SJ 105 144) - 200m Twmpau

Mynydd St Ioan (SH 973 202) - 500m Twmpau and Welsh Highlands - Uchafion Cymru

Cae Ynys Edwin (SN 678 963) - 30-99m Twmpau

Parc y Lan (SN 454 156) - 100m Twmpau

Cnwc y Bryn (SM 952 256) - The Welsh P15s

Mapping Mountains – Trimble Surveys – Mynydd Epynt

 

02.11.24  Pt. 428.9m (SO 035 449) 

Pt. 428.9m (SO 035 449)

Lack of daylight hours dictated that this was our last hill of the day.  It was 3.20pm when we set off from the narrow road that bisects this hill from its higher neighbour to the north.

At this time of year the hill consists of grass and dulled autumnal bracket.  Green tracks lead across the hill, bisecting at points, giving both farmers and hill walkers ease of passage.  The underfoot conditions and the rolling nature of the land hereabouts give a semblance of gentleness to the hill.  It was an ideal choice for our last hill of the day and would give Charles a new P30.  I had previously visited the hill in 2008 when including it in a good lengthy circuit with its higher northerly neighbour. 

Convenient place to park a car

Leaving the car I followed Charles on a green track that contoured its way around an intermediary bump.  Although there was no breeze, a slight chilled feeling pervaded the hill as late afternoon gently turned to dusk.  This only added to the quality of being out in such land. 

Heading for the hill

Wet surrounds indicated the low points of the track as it continued around a second intermediary bump, which again we bi-passed with the track contouring its way around.  From here it was only a short distance to the high point of the hill which reared up in front of us as an elongated flattish broad ridge.

Prior to visiting I had LIDAR’ed the hill and although the ten figure summit grid reference proved not to be needed, as I eventually resorted to sighting by eye, I nevertheless initially used the Trimble as a hand-held device to zero in on what LIDAR gives as the summit position. 

LIDAR image of Pt. 428.9m (SO 035 449)

However, the summit consists of numerous small bumps, a number of which vied for the high point.  It was now that I dispensed with the grid reference produced by LIDAR and sighted across the top from a number of directions before choosing what was judged as the high point.  The Trimble was soon set up gathering data. 

Charles heading for the summit

During data collection I stood away from the equipment writing all necessary detail in my surveying notebook.  Once five minutes of data were gathered and stored I walked back to the equipment, turned it off and took a few photos.  Before packing it away we were joined by an enthusiastic Tess the dog and her human companion, who unfortunately neither of us asked her name.  I had spotted her a while earlier as she ran across the hill, she was now heading toward us and asked what we were doing, having thought we may be studying ferns. 

Gathering data at the summit of Pt. 428.9m (SO 035 449)

It was lovely meeting her; she lived on a small holding near by and used this and its adjacent hill to run on.  During the conversation Tess ran this way and that, a never ending four legged bundle of enthusiastic energy jumping up to greet us whilst barking her happiness. 

At the summit

As the two of them ran off down the hill we also headed down toward the near green track, and then retraced our inward route.  The walk had taken just over an hour and by the time we arrived back at the car, dusk was setting. 

 

Survey Result:           

 

Pt. 428.9m (significant name change)  

Summit Height:  428.9m (converted to OSGM15, Trimble GeoXH 6000)

Summit Grid Reference:  SO 03592 44968 (Trimble GeoXH 6000)

Col Height:  396.7m (LIDAR)

Col Grid Reference:  SO 03648 45409 & SO 03664 45405 (LIDAR)

Drop:  32.1m (Trimble GeoXH 6000 summit and LIDAR bwlch)

Dominance:  7.49% (Trimble GeoXH 6000 summit and LIDAR bwlch)  

 

 

For further details please consult the Trimble Survey Spreadsheet

Mapping Mountains – Significant Name Changes – The Welsh P15s

 

Cnwc y Bryn (SM 952 256) 

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 Cnwc y Bryn (SM 952 256)

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 10^th May 2019. 

The Welsh P15s by Myrddyn Phillips

The hill is adjoined to the Garn Fawr group of hills, which are situated in the south-western part of South Wales (Region B, Sub-Region B1), and it is positioned with a minor road to its north and south, the B4330 road to its west and the A40 road to its east, and has the village of Cas-blaidd (Wolf’s Castle) towards the north-east.

When the listing that became known as The Welsh P15s was being compiled, this hill was included in accompanying P14 sub list 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. 

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

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

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 437 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Cnwc y Bryn in the apportionments, with the details on the Tithe map appearing in the parish named as Hayscastle and in the county named as Pembroke. 

Extract from the apportionments

Therefore, the name this hill is now listed by in The Welsh P15s is Cnwc y Bryn and this was derived from the Tithe map. 

 

The full details for the hill are: 

Group:  Garn Fawr 

Name:  Cnwc y Bryn

Previously Listed Name:  Pt. 97m 

OS 1:50,000 map:  157, 158

Summit Height:  97.1m (LIDAR)                                                           

Summit Grid Reference:  SM 95266 25628 (LIDAR)                                                  

Bwlch Height:  82.3m (LIDAR) 

Bwlch Grid Reference:  SM 94694 25823 & SM 94695 25824 (LIDAR) 

Drop:  14.8m (LIDAR) 

 

Myrddyn Phillips (December 2024)

Mapping Mountains – Significant Name Changes – 100m Twmpau

 

Parc y Lan (SN 454 156) 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Parc y Lan (SN 454 156)

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

100m Twmpau - Welsh hills at or above 100m and below 200m in height that have 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau, with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop.  The list is authored by Myrddyn Phillips, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Mynydd Sylen group of hills, which are situated in the southern part of South Wales (Region B, Sub-Region B5), and it is positioned with the A48 road to its north and the B4306 road to its south-west, and has the town of Caerfyrddin (Carmarthen) towards the north-west.

When the original 100m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website, this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category.

After the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-assessed and it was listed under the point (Pt. 148m) notation with 26m of drop, based on the 148m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and the 122m 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

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

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 3571 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Parc y Lan in the apportionments, with the details on the Tithe map appearing in the parish of Llangyndeyrn and in the county named as Carmarthen. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau is Parc y Lan, and this was derived from the Tithe map. 

 

The full details for the hill are:

Group:  Mynydd Sylen

Name:  Parc y Lan

Previously Listed Name:  Pt. 148m   

OS 1:50,000 map:  159

Summit Height:  148.5m (LIDAR) 

Summit Grid Reference:  SN 45458 15666 & SN 45457 15664 (LIDAR) 

Bwlch Height:  123.7m (LIDAR) 

Bwlch Grid Reference:  SN 46262 16790 (LIDAR) 

Drop:  24.9m (LIDAR) 

 

Myrddyn Phillips (December 2024)

 

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

 

Cae Ynys Edwin (SN 678 963) 

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

LIDAR image of Cae Ynys Edwin (SN 678 963)

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

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

30-99m Twmpau by Myrddyn Phillips

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

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

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

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

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

Extract from the Tithe map

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

Extract from the apportionments

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

 

The full details for the hill are:

Group:  Banc Llechwedd Mawr

Name:  Cae Ynys Edwin

Previously Listed Name:  Pt. c 23m 

OS 1:50,000 map:  135

Summit Height:  29.5m (LIDAR) 

Summit Grid Reference:  SN 67832 96352 (LIDAR)               

Bwlch Height:  4.2m (LIDAR) 

Bwlch Grid Reference:  SN 67880 96073 (LIDAR) 

Drop:  25.3m (LIDAR) 

 

Myrddyn Phillips (December)