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Fundamental Benchmark Details & GPS Waypoint

Twyn Carn Celyn 416.4m (1366ft)

Summit Feature: Name taken from OS draft surveyors map. Also recorded on OS maps as Mynydd Pen-y-graig and Mynydd Carn Celyn.
Classification: Hill Trigpoint, Befour, Britfour, Pedwar, P30 Tump.
OS Grid Ref: SS986906 (10 figure Grid Ref: SS9861990606).
UK Area: 32 - Neath to Chepstow (OS Maps 1:50k 170. 1:25k 166.)
Latitude: 51.60514, Longitude: -3.4653, Height: 416.4 metres (1366 feet)
Prominence: 36.3 metres (119 feet)
Unique Waypoint POI Name: 0416.- (DoBIH Hill ID: 15635)

Associated Trigpoint:
  TP6055 'Twyn Carn-Glen' Grid Ref: SS9863690591 Separation: 23m from Hill grid ref.

External Links for Twyn Carn Celyn:
-GeoHack link... -OS Map Bing link... -Google Map link... -Geograph link... -Twyn Carn Celyn on -Twyn Carn-Glen on

Data courtesy of Myrddyn Phillips and Aled Williams

Selected mapping: Google or Bing / Ordnance Survey

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

Mynydd Pen-y-graig List & GPS Waypoints:

Climbed Twyn Carn Celyn? Log in to tick it off...

  • '0416.-' SS986906 Twyn Carn Celyn (416m, p36.3)

Member's Comments on Twyn Carn Celyn...


Twyn Carn Celyn has been climbed by...

Adrian Anton Areluctant-triggeR Carole Chocywokky Chris Nash jonglew RDK rhw slateloose underhill


Total = 1 Fundamental Benchmark in
Data courtesy of Myrddyn Phillips and Aled Williams


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