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Fundamental Benchmark Details & GPS Waypoint

Twyn Ddisgwylfa Fach 491.5m (1612ft)

Summit Feature: Name taken from OS enlarged mapping on Old Maps website. Also recorded on OS maps as Mynydd Gethin, Mynydd Merthyr and Cefn Pennar.
Classification: Hill Trigpoint, Befour, Britfour, Clem, Hump, Pedwar, Sub-marilyn, P30 Tump.
OS Grid Ref: SO044025 (10 figure Grid Ref: SO0443702520).
UK Area: 32 - Neath to Chepstow (OS Maps 1:50k 170. 1:25k 166.)
Latitude: 51.71325, Longitude: -3.38458, Height: 491.5 metres (1612 feet)
Prominence: 148.8 metres (488 feet)
Unique Waypoint POI Name: 0491.p (DoBIH Hill ID: 2291)

Associated Trigpoint:
  TP1356 'Cefn Pennar' Grid Ref: SO0442302514 Separation: 15m from Hill grid ref.

External Links for Twyn Ddisgwylfa Fach:
-GeoHack link... -OS Map Bing link... -Google Map link... -Geograph link... -Twyn Ddisgwylfa Fach on -Cefn Pennar on

Data courtesy of Myrddyn Phillips and Aled Williams

Selected mapping: Google or Bing / Ordnance Survey

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

Mynydd Gethin List & GPS Waypoints:

Climbed Twyn Ddisgwylfa Fach? Log in to tick it off...

  • '0491.p' SO044025 Twyn Ddisgwylfa Fach (492m, p148.8)

Member's Comments on Twyn Ddisgwylfa Fach...


Twyn Ddisgwylfa Fach has been climbed by...

Adrian Alex C Andrew Brown Andrew C H andys Anton Areluctant-triggeR Carole Chalky1953 Chris Nash Colin Crawford Des Taylor Dugswell2 gerrybowes iaindbrown iLiqus itchy-trigger-finder Joanna jonglew Konnor64 Lennylee ManofKernow oakesave ogirl RDK rhalstead rhw slartibardfast slateloose stevent0809 Ted Richards Tony J underhill


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


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