James M. Tabor chronicles the adventurous efforts of two scientists who attempted to discover the deepest cave on the planet and recounts the experiences of American Bill Stone, who explored southern Mexico's Cheve Cave, and Ukrainian Alexander Klimchouk, who explored the Republic of Georgia's Krubera.
A beginner's guide to caving, with a brief history of the sport, and information on supplies and equipment, basic safety, techniques, training, working as a team, and finding caves to explore.
Text and color photos showcase the tasks done by people who work in caves, following a microbiologist and a cave rescue expert to Greenland's ice cap and the Yucatan Peninsula's underwater caves.