carboniferous layers of limestone and shale cliffs at dunraven bay, vale of glamorgan, south wales

age bad bay beach carboniferous cliff coast coastline cove doctor dunraven eroded evening formation geological geology glamorgan ice jurassic landscape layers limestone ocean ogmore peaceful pebbles pool rocks sand scenic sea seascape seaside sedimentary shale shore south southerndown stone strata texture tidal tide tranquil vale wales water weathered who wolf