Fundamental Benchmark Details & GPS Waypoint

Mynydd Marchywel 418m (1371ft)

Classification: Hill Trigpoint, Clem, Hump, Marilyn, Pedwar, P30 Tump.
OS Grid Ref: SN768037 (10 figure Grid Ref: SN7681903768).
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 170. 1:25k 165.)
Latitude: 51.719072, Longitude: -3.784603, Height: 418 metres (1371 feet)
Prominence: 263 metres (863 feet)
Unique Waypoint POI Name: 0418.P (DoBIH Hill ID: 2278)

Associated Trigpoint:
  TP4392 'Mynydd March Hywel' Grid Ref: SN7682003768 Separation: 71m from Hill grid ref.

External Links for Mynydd Marchywel:
-GeoHack link... -OS Map Bing link... -Google Map link... -Geograph link... -Mynydd Marchywel on -Mynydd March Hywel on

Data courtesy of Myrddyn Phillips and Aled Williams

Selected mapping: Google or Bing / Ordnance Survey

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

Mynydd Marchywel List & GPS Waypoints:

Climbed Mynydd Marchywel? Log in to tick it off...

  • '0418.P' SN768037 Mynydd Marchywel (418m, p263)

Member's Comments on Mynydd Marchywel...

Member's Grid References for Mynydd Marchywel...

  • No members have yet submitted better grid references for this , why not be the first?


Mynydd Marchywel has been climbed by...

Andrew Brown Anton blue monkey Carole Chalky1953 Chris Pearson Chris Upson chriswatson Colin Crawford Des Taylor Dugswell2 gerrybowes GordonAdshead iaindbrown Jim.Fothergill jonglew Margaret nordicstar oakesave outlawcatcher PM 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


Follow us...