The Quantocks extend northwards from the Vale of Taunton Deane, for about to the north-west, ending at Kilve and West Quantoxhead on the coast of the Bristol Channel. They form the western border of Sedgemoor and the Somerset Levels. The highest point is Wills Neck, at . The Quantocks consist of sedimentary rocks from the Devonian period, originally laid down under a shallow sea and slowly compressed into solid rock. The landscape consists of heathland with heather, gorse and bracken, ancient woodland and pasture land, with steep slopes and wooded combes.