The author recounts his harrowing experiences of being trapped for six days in Blue John Canyon in Utah and having to amputate his own right arm in order to save his life.

Having had no chance to save his friend, Davidson had to save himself by climbing out of the crevasse, and the odds against him were long. Davidson was injured, exhausted, and probably in shock. He lacked both the requisite technical aid-climbing experience and most of the proper gear. But he drew strength from recollections of Joe Simpson's against-all-odds self-rescue in Touching the Void. After many hours of struggle, Davidson finally climbed back...

By age 25, Heather Anderson had hiked what is known as the "Triple Crown" of backpacking: the Appalachian Trail (AT), Pacific Crest Trail (PCT), and Continental Divide Trail (CDT)a combined distance of 7,900 miles with a vertical gain of more than one million feet. A few years later, she left her job, her marriage, and a dissatisfied life and walked back into those mountains. In her new memoir, Thirst: 2600 Miles to Home, Heather, whose trail name...