Mynydd y Lan

Mynydd y Lan is a 381-metre-high flat-topped hill in Caerphilly county borough in South Wales. It falls largely within the community of Ynysddu but its northern and eastern margins are within Crosskeys community. Its largely wooded southern and eastern flanks rise steeply from the Sirhowy and Ebbw valleys respectively. A wireless transmission station is located towards the northern end of the summit plateau.

Three Radio Towers
Mynydd y Lan
Mynydd y Lan from Wattsville
Highest point
Elevation381 m (1,250 ft)
Prominence215 m (705 ft)
ListingMarilyn
Coordinates51.6257°N 3.1455°W / 51.6257; -3.1455 
Naming
English translationhill of the church/enclosure
Language of nameWelsh
Geography
LocationCaerphilly, Wales
OS gridST 208923
Topo mapOS Landranger 171 / Explorer 152, 166

Geology

The hill is situated towards the southeastern margin of the South Wales Coalfield. The summit plateau and upper slopes of the hill are formed from sandstones of the Pennant Sandstone Formation assigned to the Warwickshire Group of the late Carboniferous Period.[1][2]

Access

The larger part of the hill including its flanking woodlands is mapped as open access under the Countryside and Rights of Way Act 2000 and thereby open to access on foot by the public. In addition a handful of public footpaths run through the woodlands providing additional access. One is followed by the Ebbw Valley Walk, another by the Raven Walk.[3]

References
  1. British Geological Survey 1:50,000 map sheet 249 Newport & accompanying memoir
  2. BGS ‘Geology of Britain’ viewer
  3. Ordnance Survey Explorer maps 152 Newport & Pontypool, 166 Rhondda & Merthyr Tydfil/Merthyr Tudful
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