The Mendip Hills are a range of limestone hills situated to the south of Bristol and Bath in Somerset, England. Running west to east between Weston-super-Mare and Frome, the Hills overlook the Somerset Levels to the south and the Avon valley to the north. The hills give their name to the local government district of Mendip, which covers most of the area. The hills are largely carboniferous limestone, which is quarried at several sites. The higher, western, part of the Hills, has been designated an Area of Outstanding Natural Beauty (AONB) which gives it the same level of protection as a national park. The AONB is 200 km2 (80 sq mi). The Mendip Hills AONB Service and Somerset County Council's outdoor education centre is at the Charterhouse Centre near Blagdon. Mendip is home to a wide range of outdoor sports and leisure activities, many based on the particular geology of the area. It is recognised as a national centre for caving and cave diving. In addition to climbing and abseiling, the area is popular with hillwalkers and those interested in natural history. (Full article...)