Ruins of Guge
Near the mighty Mount Kailash (about 1,200 miles from Lhasa), lies the ruins of the once great Buddhist civilization of Guge. Founded in the 10th century by a descendant of a Tibetan king, it's emergence marked the second promulgation of Buddhism in Tibet. Finally lost in the 17th century under mysterious circumstances, it was rediscovered in the the 1930's by the Italian explorer, Guiseppe Tucci.
The site includes houses, once-inhabited caves, monasteries and stupas as well as sculptures, carvings and murals. The ruins cover an area of 720,000 square meters and lie at 3,800 meters (12400 feet).