Maes Glas Mawr (SH 768 724)
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.
|Maes Glas Mawr (SH 768 724)|
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 encircled by minor roads with the B5106 road 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 partly invented and transposed name of Bryn Glyn Uchaf with an accompanying note stating; Name from buildings to the South-West.
Bryn Glyn Uchaf
Height from 1989 1:50000 map. 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|
After visiting this hill I called at Glyn Uchaf farm and followed instructions pinned on the front door to call at the new house, which is situated just down the track from Glyn Uchaf. Having knocked on the front door of the new house, Tomi Owen opened it and immediately invited me in and offered me a drink and a bite to eat. I sat at the table with my rucksack on the kitchen floor whilst Tomi offered me a cup of tea and a refreshing cold drink of orange, during which I happily indulged in a plate full of shortbread. Having explained where I’d been and my interest in upland place-names Tomi told me that he’d lived at Glyn Uchaf since 1947 and is now aged 76 and that the hill is on his land and although it has no individual name the upper field where the summit is situated is known as Maes Glas Mawr.
|Tomi Owen of Glyn Uchaf farm|
Therefore, the name this hill is now listed by in the 100m Twmpau is Maes Glas Mawr, and this was derived from local enquiry.
The full details for the hill are:
Name: Maes Glas Mawr
Previously Listed Name: Bryn Glyn Uchaf
OS 1:50,000 map: 115
Summit Height: 108.5m (converted to OSGM15)
Summit Grid Reference: SH 76876 72414
Bwlch Height: 87.05m (LIDAR)
Bwlch Grid Reference: SH 76604 71933 (LIDAR)
Drop: 21.4m (Trimble summit and LIDAR bwlch)
Myrddyn Phillips (March 2019)