Beyond the Deep: The Deadly Descent into the World's Most Treacherous Cave.
Purchase a copy of this exciting account of the U.S. Deep Caving Team's 1994 San Agustín Expedition.
"The lure of the unknown, history repeatedly shows, inspires feats of engineering and audacity that would remain undreamt were all of our horizons within our grasp. Before reading Beyond the Deep, a riveting account of one of the most treacherous cave descents ever, I'd thought there could be no environment as alien as the lunar surface. No more. All the more impressive is that Stone and am Ende scrabbled into this impossibly deep hole and overcame lethal obstacles not under humanity's watchful eyes, but in relative anonymity." - Edwin E. "Buzz" Aldrin