Devil's Dyke is a 100 metre deep V-shaped dry valley on the South Downs in Sussex in southern England, 5 miles (8.0 km) north-west of Brighton. It is managed by the National Trust, and is also part of the Beeding Hill to Newtimber Hill Site of Special Scientific Interest. Devil's Dyke was a major local tourist attraction in the late 19th and early 20th centuries. It is now a popular viewpoint and site for walking, model aircraft flying and hang gliding. The South Downs Way passes the site.