Cefn Cil Sanws is a hill in the Brecon Beacons National Park within the county borough of Merthyr Tydfil in south Wales. The summit at 460m above sea level is crowned by a trig point. The steep cliffs of Darren Fawr and Darren Fach defend its western side which drops down into Cwm Taf.
Length - 2.5 miles
Difficulty – Leisurely
Free Parking
Merthyr Tydfil Golf Club,
Cefn-coed-y-cymmer,
Merthyr Tydfil
CF48 2NT

Zoe Evans

July 2, 2022

The Beautiful Cefn Cil Sanws is a 'hill' in the Brecon Beacons National Park within the county borough of Merthyr Tydfil in south Wales. The summit at 460m above sea level is crowned by a trig point. The steep cliffs of Darren Fawr and Darren Fach defend its western side which drops down into Cwm Taf. A major limestone quarry is worked on the southeastern side of the hill. An unexpected feature at this altitude is Merthyr Tydfil Golf Course which extends high onto the eastern and southern slopes of the hill. The hill is composed of a layer cake of rocks of Carboniferous age all tilted moderately to the south. The summit is formed from Carboniferous Limestone whilst outcrops of Twrch Sandstone formerly known as the Basal Grit of the Millstone can be seen to the north and on its steep western flanks. The latter show evidence of glacial striations suggesting that the hill was over-ridden by ice moving southwards from the central Beacons during the ice ages.

Zoe Evans

April 7, 2024

Sorry but this is not the summit of Cefn Cilsanws it’s way further north.

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Elevation 440 m

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Friday 31 October

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Location: Merthyr Tydfil, South Wales, Wales, United Kingdom

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