Fundamental Benchmark Details & GPS Waypoint

Garreg Hir 485m (1591ft)

Summit Feature: 484.9m summit height and 150.7m drop from Leica 530 GPS survey. Name composition in accordance with standard modern Welsh and upland place-name principles. Also recorded on OS maps as Mynydd Post-llwyd.
Classification: Hill Trigpoint, Clem, Hump, Marilyn, Pedwar, P30 Tump.
OS Grid Ref: SN998979 (10 figure Grid Ref: SN9986997916).
The original GR data for this hill was only accurate to a 6 figure grid reference (c.a 100m).
We have used additional user / trigpoint data to bring it up to 10 figures.
UK Area: 31 - Aberystwyth to Welshpool (OS Maps 1:50k 136. 1:25k 215E.)
Latitude: 52.569834, Longitude: -3.47883, Height: 485 metres (1591 feet)
Prominence: 151 metres (495 feet)
Unique Waypoint POI Name: 0485.P (DoBIH Hill ID: 2171)

Associated Trigpoint:
  TP2616 'Gareg Hir' Grid Ref: SN9989097789 Separation: 143m from Hill grid ref.

External Links for Garreg Hir:
-GeoHack link... -OS Map Bing link... -Google Map link... -Geograph link... -Garreg Hir on hill-bagging.co.uk... -Gareg Hir on trigpointinguk.com...
Data courtesy of Myrddyn Phillips and Aled Williams