Cefn Bryn

It is a 5-mile-long Old Red Sandstone ridge in south Wales, in the heart of the Gower Peninsula, in the City and County of Swansea.

Large swells and dips can be encountered along the route, formed by swallets and sinkholes in the surrounding limestone.

Just north of the ridge summit of Cefn Bryn, there is a neolithic burial ground, known as "Arthur's Stone" (Welsh: Maen Ceti).

Its name comes from a legend that the ancient British King Arthur threw a large stone from Llanelli which landed on this spot.

It lies in a shallow basin on the limestone plateau beneath Cefn Bryn, and consists of an acidic pond, heath and bog, which is important for aquatic plants, amphibians, dragonflies (including Southern Damselfly) and wetland birds.