Brean Down is a promontory off the coast of Somerset, England, standing 318 feet (97 m) high and extending 1.5 miles (2 km) into the Bristol Channel at the eastern end of Bridgwater Bay between Weston-super-Mare and Burnham-on-Sea.Made of Carboniferous Limestone, it is a continuation of the Mendip Hills. Two further continuations are the small islands of Steep Holm and Flat Holm.