Devil's Dyke is a V-shaped dry valley in the South Downs five miles north-west of Brighton, nearly a mile long and around 100 metres deep, reckoned the longest, deepest and widest dry valley in Britain. Legend has the Devil digging it to drown the churches of the Weald. An Iron Age hillfort rings the summit, and traces of the Victorian funfair, funicular and cable car survive a few minutes from the car park. Today it is walking, kite-flying and paragliding country, with a pub at the top and views over the Weald to the North Downs; the land is grazed, so dogs need leads near livestock. Reviewers love the sunsets, the quieter paths a short way from the main viewpoint, and the pub's outdoor seating for picnics. Tips from visitors: it is windy up top even in summer, paths are uneven and muddy after rain, and the car park fills on fine days, so the lower car parks and a walk up are the fallback.