Fundamental Benchmark Details & GPS Waypoint

Twyn Brynbychan 411m (1348ft)

Classification: Hill Trigpoint, Pedwar, P30 Tump.
OS Grid Ref: ST064989 (10 figure Grid Ref: ST0640098900).
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 - Neath to Chepstow (OS Maps 1:50k 170. 1:25k 166E.)
Latitude: 51.68104, Longitude: -3.355226, Height: 411 metres (1348 feet)
Prominence: 44 metres (144 feet)
Unique Waypoint POI Name: 0411.- (DoBIH Hill ID: 15641)

Associated Trigpoint:
  TP6054 'Twyn Brynbychan' Grid Ref: ST0632398915 Separation: 27m from Hill grid ref.

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

Data courtesy of Myrddyn Phillips and Aled Williams

Selected mapping: Google or Bing / Ordnance Survey

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

Twyn Brynbychan List & GPS Waypoints:

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  • '0411.-' ST064989 Twyn Brynbychan (411m, p44)

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Member's Grid References for Twyn Brynbychan...

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Twyn Brynbychan has been climbed by...

Anton Carole glynspencer jonglew ngthack rhayader_wanderer rhw Tony J


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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