Wednesday, 9 November 2016

Mapping Mountains – Significant Name Changes – 100m Twmpau

Pandy Bank (SJ 336 538)

There has been a Significant Name Change to a hill that is now listed in the 100m Twmpauwith the summit height confirmed by a survey with the Trimble GeoXH 6000 which took place on the 5th April 2016, and the bwlch height confirmed by LIDAR analysis initially conducted by Chris Crocker and subsequently by Myrddyn Phillips. 

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

100m Twmpau - All Welsh hills at and above 100m and below 200m in height that have 30m minimum drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.

The hill is a part of the Bryniau Clwyd range; this group of hills are situated in the north-eastern part of north Wales.  The hill is positioned above the busy A 483 road to its east and the Afon Alun (River Alyn) to its west, and is situated above the Gresford Industrial Park on the northern periphery of Wrecsam (Wrexham).

Pandy Bank (SJ 336 538)

Prior to the survey with the Trimble GeoXH 6000 the hill was not classified as it had not appeared in any known listing of hills.  Therefore, although there is no change in this hill’s listed name it is worth categorising under the heading of Significant Name Changes as the name this hill is now listed by comes from local enquiry.

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

Extract from the Ordnance Survey enlarged map on the Geograph website

Therefore, the name this hill is now listed by in the 100m Twmpau is Pandy Bank, and this is the preferred locally known name for the hill and it is derived from it being positioned beside the community of Pandy.  The hill is the relic of mining waste which was deposited from the old Gresford Colliery, with the second element of the name given to local hills that are the product of mine spoil. 

The full details for the hill are:

Group:  Bryniau Clwyd

Name:  Pandy Bank

OS 1:50,000 map:  117

Previously Listed Name:  Not previously classified 

Summit Height:  105.4m (converted to OSGM15)

Summit Grid Reference:  SJ 33630 53882

Bwlch Height:  70.3m (LIDAR)

Bwlch Grid Reference:  SJ 33704 53783 (LIDAR) 
Drop:  35.1m (Trimble summit and LIDAR bwlch)

Myrddyn Phillips (November 2016)

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