In 1973, Peter Matthiessen and field biologist George Schaller traveled high into the remote mountains of Nepal to study the Himalayan blue sheep and possibly glimpse the rare and beautiful snow leopard. Matthiessen, a student of Zen Buddhism, was also on a spiritual quest to find the Lama of Shey at the ancient shrine on Crystal Mountain. As the climb proceeds, Matthiessen charts his inner path as well as his outer one, with a deepening Buddhist understanding of reality, suffering, impermanence, and beauty.