Books
Maps
It is possible to get hold of a reasonable map of the route from Lhasa to Kathmandu in Kathmandu.
Schneider Maps 1:50,000.
Jumla NH44-11 (Start of the Mount Kailas trip).
Lhasa - Mt. Kailash - Guge Kingdom
Lhasa, Everest Base Camp and Kathmandu
Sacred Yatra of Kailash and Mansarovar (Heli)
Nam Tso Lake and Nyenchen Thanglha