On August 20, 1980, Reinhold Messner, the world-renowned master of alpine-style climbing, became the first person to reach the summit of Everest solo and without supplemental oxygen. A vivid account of Messner's expedition, The Crystal Horizon also reflects on how he explored his innermost thoughts while facing the most extreme physical challenge he had ever encountered. The furthest point for mind and body he calls his crystal horizon.

Inspired by the legendary mountaineers George Mallory and Maurice Wilson, Messner embarked on a year-long journey through Tibet to the glittering light and rarified air at the roof of the world. More than an adventure story, this is Messner's profound reflection on his emotional reactions to Tibet, the challenges he faced, and the explorations of selfñinspired by this amazing journey.