Wales
Foel Cwmcerwyn
537M
1760FT
About Foel Cwmcerwyn
Rising as the roof of the Preseli Hills, this Marilyn offers a rugged moorland experience characterized by wind-swept heather and expansive views across Pembrokeshire. The summit provides a clear perspective over the jagged coastline of St Bride’s Bay and, on exceptionally clear days, the distant silhouette of the Wicklow Mountains across the Irish Sea.
Key Statistics
Rank
73rd Highest in Wales
Parent Range
Wales
Prominence
?
345.7m
Nearest Town
Rosebush
Geology
The ground beneath you is part of the Aber Mawr Shale Formation. It consists of mudstone, a rock created from layers of ancient, compressed mud.
Find It
OS Grid Reference
SN094311
Latitude
51.9457°N
Longitude
4.7746°W
Did You Know?
- •The name is Welsh, with Foel meaning a bare hill and Cwmcerwyn translating to 'cauldron valley' — a reference to the deep, bowl-like hollow found on its eastern flank.
- •As the highest point in the Mynydd Preseli, the summit sits within a landscape famous for providing the 'bluestones' used in the construction of Stonehenge's inner circle.
- •On a day of perfect visibility, the view from the trig pillar spans from the Llyn Peninsula in the north all the way across the Bristol Channel to the North Devon coast.
- •The ascent from the village of Rosebush passes through the remains of 19th-century slate quarries, which once supplied roofing materials for Westminster Palace.
- •While it qualifies as a Marilyn due to its prominence, the summit's profile is so broad that you might spend several minutes wandering the plateau just to be sure you've found the actual highest tuft of grass.