This ultimate indoor activity will have you venture deep into the famous caves at Cheddar to see where the Cheddar Man, Britain's oldest skeleton, was discovered.
Location: Cheddar, Somerset
Head underground to gaze in wonder at the fascinating caves that form a major, but hidden, part of the Yorkshire Dales landscape.
Location: Ingleton, North Yorkshire
Venture into the Buckinghamshire chalk caves that held the notorious Hellfire Club, founded by Sir Francis Dashwood in the 18th century.
Location: West Wycombe, Buckinghamshire