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Hidden Realms, by one of the world's most respected cavers Martyn Farr, showcases 100 of the most outstanding, must-visit caves, potholes, mines and tunnels across the UK and Ireland. It is illustrated with stunning photography throughout and the accompanying texts skilfully weave nuggets about the history of the sites hidden beneath our feet.

Hidden Realms: A celebration of 100 of the finest caves and mines in Great Britain and Ireland