Llanol (SH 380 882) / Fferam Isaf (SH 384 881)
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 detail on contemporary maps produced from Ordnance Survey data.
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 that have 30m minimum drop, with an accompanying sub list 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, with
the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.
The 30-99m Twmpau by Myrddyn Phillips |
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 as a twin summit with 24m of drop, based on the 98m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map at SH 38057 88231 and the 98m summit spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map at SH 38425 88175, and the 74m 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 |
Extract from the Tithe map |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Ynys Môn
Name: Llanol / Fferam
Isaf
Previously Listed Name: Pt. 98m
OS 1:50,000 map: 114
Summit Height: 98m (spot height)
Summit Grid Reference: SH 38057 88231 (Llanol spot height) & SH 38425 88175 (Fferam Isaf spot height)
Bwlch Height: 74m (spot height)
Bwlch Grid Reference: SH 38310 88630 (spot height)
Drop: 24m (spot height summit and bwlch)
Myrddyn Phillips (July
2021)
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