Established by Geography teacher John Miller concluding his 34 years' involvement with Ten Tors expeditions, this archive showcases a visual history of the Army's Dartmoor challenge since 1974.

Featuring secondary school student participants, staff, supporters, certificates and press clippings, this archive contains more than 700 documents and memories about the challenge, forming the most extensive record established to date.

All of the images document the endeavours of Isca Academy students but there are still plenty of moments captured by other people. We welcome submissions from or about former Isca competitors at ttarchive@iscaexeter.co.uk.