“Heart-stopping and relentlessly gripping. Tabor takes us on an odyssey into unfathomable worlds beneath us, and into the hearts of rare explorers who will do anything to get there first.”—Robert Kurson, author of ShadowDivers
“Holds the reader to his seat, containing dangers aplenty with deadly falls, killer microbes, sudden burial, asphyxiation, claustrophobia, anxiety, and hallucinations far underneath the ground in a lightless world. Using a pulse-pounding narrative, this is tense real-life adventure pitting two master cavers mirroring the cold war with very uncommonly high stakes.”—Publishers Weekly (starred review)
“A fascinating and informative introduction to the sport of cave diving, as well as a dramatic portrayal of a significant man-vs.-nature conflict. . . . What counts is Tabor’s knack for maximizing dramatic potential, while also managing to be informative and attentive to the major personalities associated with the most important cave explorations of the last two decades.”—Kirkus Reviews
From the Hardcover edition.