Cockington Cliff is the highest section of cliff along the Bideford Bay coast. At the base of Cockington Head is a striking geological feature of great interest. It is a very fine anticline known as Tut’s Hole. A sharp fold of a series of sandstone beds, some of which are four feet in thickness, projecting clear from the cliff. The anticline has become broken at its crest, and the sides are beginning to crumble away. In 1903, it measured fifty feet in height and seventy feet across the base.