Trekking in Tibet: A Traveler's Guide, Gary McCue, pp. 222, The Mountaineers Books, 2010, ISBN 9781594854118, ... Mount Kailash is sacred to the Bön religion as well, as it is the site where its founder, Tönpa Shenrab, is said to have descended from heaven, and formerly it was the spiritual center of Zhang Zhung, the ancient Bönpo empire ...
Opening the Door to Bön, Nyima Dakpa, pp. 128, Snow Lion Publications, 2005, ISBN 9781559398558, ... The kingdom of Zhang Zhung existed until the end of the eighth century when it was integrated into Tibet after the death of Ligmincha, its last king ... Mount Kailash was the center of Zhang Zhung ...
