High Quality Content by WIKIPEDIA articles! Exmoor is an area of hilly open moorland in west Somerset and north Devon in South West England, named after the main river that flows out of the district, the River Exe. The moor has given its name to a National Park, which includes the Brendon Hills, the East Lyn Valley, the Vale of Porlock and 55 kilometres (34 mi) of the Bristol Channel coast. The total area of the park is 692.8 square kilometres (267.5 sq mi), of which 71% is in Somerset and 29% in Devon. The National Park is primarily an upland area with a dispersed population living mainly in small villages and hamlets. The largest settlements are Porlock, Dulverton, Lynton, and Lynmouth, which together contain almost 40% of the park`s population. Lynton and Lynmouth are combined into one parish and are connected by the Lynton and Lynmouth Cliff Railway.