Gaping Gill by Kevin Dixon. A 48 page paper back covering Gaping Gill Pothole and surface Fauna, Flora, Geology, History and Maps.
Available at the recommended price of just £5-00 from:-
Clapham Village Store
Ingleborough Show Cave
Inglesport in Ingleton
Penyghent Cafe, Horton in Ribblesdale
Stump Cross Caverns, Greenhow
Yorkshire Dales National Park Shops in Malham and Grassington
and the BPC and CPC Gaping Gill Winch Meets.