Little explored and virtually inaccessible, the Tsangpo Gorge in south-east Tibet is the world's deepest gorge. Through it twists the Yarlong Tsangpo, Tibet's great river, emerging from below on the plains of India. This is the story of its exploration and the rich plant and animal life found there. Riddle of the Tsangpo Gorges, first published in 1926, is the fascinating account of plant-hunter and explorer Frank Kingdon Ward's most important expedition. Kenneth Cox, Kenneth Storm, Jr. and Ian Baker spent over ten years retracing the route of the 1924-25 expedition and managed to reach...