London: J.M. Dent & Sons, (1955). First edition thus. Hardcover. 8vo. Orange boards in photographic dust jacket. About very good in like DJ. Some chips to jacket (upper inch of spine missing), and light edgewear. Endpapers lightly foxed, but almost all of text block clean and bright. Good and sound. 160pp. Very good / very good. Item #18752
Boook by the French cave diver on his exploration of the Pyrenees cavern in the Col de la Pierre St. Martin, which took several years.