Enter an Ancient Underground Wonderland in the Heart of the Peak District National Park. Treak Cliff Cavern is of international fame and geological importance and as such is a designated Site of Special Scientific Interest.

Open Door Adventure provides a wide range of outdoor pursuits on land and water, from climbing and abseiling to quad biking, canoe/kayaking, caving, archery, mountain biking, low & high ropes course, paintball games, leap of faith, jacobs ladder, zip wire, assault course, team building & problem solving exercises and these are all on site!