Wenbu Nancun in Tibet Nagqu area is the ancient city of Qiangtang plateau, 4700 meters above sea level. Wenbu Nancun Village is situated on the bank of Tangra Yumco, whose buildings are all made of stone. It is the birthplace of Bon - the mysterious ancient religion on the Tibetan Plateau, and also the hinterland of the ancient Zhangzhung Kingdom. Tangra Yumco at an altitude of 4528m, is the deepest and 4th largest saltwater lake in Tibet.