Fundamental Benchmark Details & GPS Waypoint

Hirfynydd 481m (1578ft)

Summit Feature: This is the highest point on Hirfynydd.
Classification: Hill Trigpoint, Clem, Hump, Marilyn, Pedwar, P30 Tump.
OS Grid Ref: SN839076 (10 figure Grid Ref: SN8394607609).
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: 32 - Carmarthen to Vale of Neath (OS Maps 1:50k 160. 1:25k 12W.)
Latitude: 51.755114, Longitude: -3.68276, Height: 481 metres (1578 feet)
Prominence: 246 metres (807 feet)
Unique Waypoint POI Name: 0481.P (DoBIH Hill ID: 2277)

Associated Trigpoint:
  TP3276 'Hirfynydd' Grid Ref: SN8392507601 Separation: 25m from Hill grid ref.

External Links for Hirfynydd:
-GeoHack link... -OS Map Bing link... -Google Map link... -Geograph link... -Hirfynydd on -Hirfynydd on

Data courtesy of Myrddyn Phillips and Aled Williams

Selected mapping: Google or Bing / Ordnance Survey

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

Hirfynydd List & GPS Waypoints:

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Member's Grid References for Hirfynydd...

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Hirfynydd has been climbed by...

Andrew Brown Anton Carole Chalky1953 Chris Pearson Chris Upson chriswatson Colin Crawford Des Taylor Dugswell2 gerrybowes GordonAdshead iaindbrown Ian Baines Jim.Fothergill jonglew nordicstar oakesave outlawcatcher PM rhayader_wanderer rhw RichTea Shaun1d Sprog stevent0809 Ted Richards Tony J Tundraboy underhill


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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