Shale Rock Layers On North Devon Coast Near Hartland Quay, England, UK Stock Image

Hartland Quay is located on the Atlantic coast of Devon, south of Hartland point and north of Bude, Cornwall. It experiences some of the roughest seas in winter and is a former harbour.The cliffs at Hartland Quay in North Devon display a spectacularly folded sequence of alternating grey shales and sandstones known as the Crackington Formation that was deposited in the Carboniferous period approximately 320 million years ago.