Blackbury Camp is an Iron Age hill fort situated in Southleigh, Devon, England. The ramparts are still relatively high, showing an unusual entrance feature. The fort occupies the end of a large ridge at some 185 metres (607 ft) above sea level. It was defended by a single bank and ditch, forming a roughly D-shaped enclosure approximately 200 metres (660 ft) long and 100 metres (330 ft) wide. A triangular barbican was added to the south but was never completed.