Sunday 7 April 2019

Mapping Mountains – Significant Name Changes – 100m Twmpau


Bryn Eithin (SH 775 752)

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, its location, the drop and status of the hill confirmed by LIDAR analysis, and a subsequent summit survey with the Trimble GeoXH 6000 conducted by Myrddyn Phillips, with the latter taking place on the 10th October 2018.

Bryn Eithin (SH 775 752)

LIDAR image of Bryn Eithin (SH 775 752)

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.

The hill is adjoined to the Carneddau group of hills, which are situated in the north-western part of North Wales (Region A, Sub-Region A1), and it is positioned with the B5106 road to its west and the Afon Conwy (River Conwy) to its east, and has the town of Conwy towards its north.

The hill originally appeared in the 100m P30 list on Geoff Crowder’s v-g.me website under the name of Iolyn Park which is a name that appears on contemporary Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer maps and which is placed relatively close to this hill’s summit.
 

Iolyn Park
130c
115
17


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

When visiting this hill I met Richard Davies; an employee at the Gorse Hill Caravan Park, which takes in land including the summit of this hill.  Richard kindly directed me toward the high point and during our conversation referred to the hill as Gorse Hill, which is another name that appears close to this hill’s summit on contemporary Ordnance Survey maps.  On my way toward the top I then met Rob Thomas-Evelyn; the owner of the site, Rob was concerned that someone was wandering about unannounced and asked me to visit the site office for health and safety protocols after I had been to the summit.

The summit of Bryn Eithin

After visiting the summit I walked down to the site office, where I greeted Rob, signed the visitor’s book and proceeded to ask him about the hill and its name.  Rob confirmed the hill is known as Gorse Hill and unprompted referred to it as Bryn Eithin, which is the literal translation of Gorse Hill. 

LIDAR summit image of Bryn Eithin

Therefore, the name this hill is now listed by in the 100m Twmpau is Bryn Eithin, and this was derived from local enquiry with the English equivalent appearing on contemporary Ordnance Survey maps as Gorse Hill, with it being standard practice to prioritise a Welsh name over a literal translation of it in to English.


The full details for the hill are:

Group:  Carneddau

Name:  Bryn Eithin

Previously Listed Name:  Iolyn Park
 
OS 1:50,000 map:  115

Summit Height:  128.5m (converted to OSGM15)

Summit Grid Reference:  SH 77584 75224

Bwlch Height:  95.5m (LIDAR)

Bwlch Grid Reference:  SH 77644 75447 (LIDAR) 

Drop:  33.0m (Trimble summit and LIDAR bwlch)



Myrddyn Phillips (April 2019)




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