Showing posts with label White Park. Show all posts
Showing posts with label White Park. Show all posts

Thursday, 27 September 2018

Mapping Mountains – Significant Name Changes – 100m Twmpau


White Park (SN 158 091)

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

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

LIDAR image of White Park

The hill is adjoined to the Brandy Hill group of hills, which are situated in the south-western part of Mid and West Wales (Region B, Sub-Region B4), and is positioned between the coast to its south and the A 47 road to its north, and has the small community of Ludchurch to its north-west.

The hill appeared in the accompanying sub list to the 100m P30 list on Geoff Crowder’s v-g.me website under the name of Craig-y-borion, with an accompanying note stating; Name from buildings 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, just use the name of a farm situated close to the summit 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now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historical documents, through this form of research an appropriate name for the hill can usually be found.


Craig-y-borion
137m
158
36
Trig pillar. Name from buildings to the North-West.


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 321 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 White Park in the apportionments, with the details on the Tithe map appearing in the county named as Pembroke and in the parish of Amroth.

Extract from the apportionments

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


The full details for the hill are:

Group:  Brandy Hill

Name:  White Park

Previously Listed Name:  Craig-y-borion 

Summit Height:  138.1m (LIDAR)

OS 1:50,000 map:  158

Summit Grid Reference:  SN 15867 09111 (LIDAR) 
 
Drop:  31.0m (LIDAR)


Myrddyn Phillips (September 2018)




Sunday, 23 September 2018

Mapping Mountains – Hill Reclassifications – 100m Twmpau


White Park (SN 158 091) – 100m Sub-Twmpau reclassified to 100m Twmpau

There has been confirmation of a reclassification to the 100m Twmpau due to LIDAR analysis conducted by Myrddyn Phillips, with the criteria for this list being:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 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, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.

When the original Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill appeared in the accompanying Hills to be surveyed sub list as it did not meet the criteria then used for the main P30 list; however this sub list has now been standardised and interpolated heights also included in the main P30 and the accompanying sub list.

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

When this list was standardised and interpolated heights also included this hill was listed with an estimated c 29m of drop, based on the 137m height given to a triangulation pillar on the summit area and an estimated bwlch height of c 108m based on interpolation of 5m bwlch contouring between 105m – 110m on the Ordnance Survey 1:25,000 Explorer map.  The drop value was re-assessed prior to LIDAR analysis and a tentative estimate of c 30m then given.

The name of the bounded land where the summit of this hill is situated is White Park, and this was derived from the Tithe map.  The hill is adjoined to the Brandy Hill group of hills, which are situated in the south-western part of Mid and West Wales (Region B, Sub-Region B4), and is positioned between the coast to its south and the A 47 road to its north, and has the small community of Ludchurch to its north-west.

If wanting to visit the hill permission to do so should be sought as it is not a part of designated open access land and has no rights of way on it, although a permissive path does cross the hill to the south of its summit.

The confirmation of the addition of White Park to 100m Twmpau status is due to LIDAR analysis conducted by Myrddyn Phillips.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales. 

LIDAR image of the bwlch of White Park

LIDAR image of the summit of White Park

The 2m DTM LIDAR analysis gives the hill the following details:


Name:  White Park

Summit Height:  138.1m

Summit Grid Reference:  SN 15867 09111

Bwlch Height:  107.1m

Bwlch Grid Reference:  SN 15723 09669

Drop:  31.0m


Therefore, the 138.1m LIDAR analysis for the summit position at SN 15867 09111 and the 107.1m LIDAR analysis for the bwlch position at SN 15723 09669 gives this hill 31.0m of drop, which confirms its addition to 100m Twmpau status.


LIDAR image of White Park

The full details for the hill are:

Group:  Brandy Hill

Name:  White Park

OS 1:50,000 map:  158

Summit Height:  138.1m (LIDAR)

Summit Grid Reference:  SN 15867 09111 (LIDAR)

Bwlch Height:  107.1m (LIDAR)

Bwlch Grid Reference:  SN 15723 09669 (LIDAR)

Drop:  31.0m (LIDAR)


Myrddyn Phillips (September 2018)