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 -Gareg Hir on

Data courtesy of Myrddyn Phillips and Aled Williams

Selected mapping: Google or Bing / Ordnance Survey

:Fundamental Benchmark | :Nearby Hill | :Nearby Trigpoint | : mouseover

Garreg-hir List & GPS Waypoints:

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Member's Comments on Garreg Hir...

Member's Grid References for Garreg Hir...

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Garreg Hir has been climbed by...

Andrew Brown Anton Areluctant-triggeR Carole Chalky1953 Chris Pearson chriswatson Colin Crawford Des Taylor Dugswell2 gerrybowes GordonAdshead iaindbrown IainT Ian Baines Jim.Fothergill Margaret millsno9 nordicstar oakesave PM rhayader_wanderer rhw RichTea Sprog stevent0809 thenomad Tony J Tundraboy vegibagger winerwalker


Total = 1 Fundamental Benchmark
* The waypoint data in italics is only accurate to a 6 fig grid reference. Click here to learn how to help improve it.
Data courtesy of Myrddyn Phillips and Aled Williams


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