Author: BEDFORD, BRUCE L.
Title: Challenge Underground.
Description: First Edition; 8vo; pp. 192; 12 pages of b/w photographic plates, 12 b/w line drawings, index; original blue cloth, title lettered in white on spine, dustjacket, price clipped, previous owner's name on front free endpaper, otherwise a very good copy. London, George Allen & Unwin, (1975).

Keywords: caving caves climbing sport adventure