Available weekends and school holidays, subject to course opening times. Reservations must be made in advance. Minimum height requirement of 1.2 metres (3ft 11"). Adventurers aged 15 years or under must be supervised by a full paying participating adult over 18 years. One participating adult may supervise a maximum of two children aged 15 years or under (adult does not need to participate in the activity but must be present at all times). Participants must not be more than 18 stone (120 kg) in weight.