Afterwards, Yates continued mountaineering on the hardest routes. Perhaps the most testing of all was one of the world's largest vertical rockfaces, the 4, 000-ft East Face of the Central Tower of Paine in Chile. Battered by ferocious storms and almost crippled with fear just below the summit, Yates and his three companions are forced into a nightmare retreat. After resting in a nearby town, they return to complete the climb, but Yates knows he still has to face one of life's greatest challenges...