412 square kilometers, and the deepest spot is 77 meters. The lake is surrounded by quiet and beautiful snow-capped mountains.
According to a legend, Sakyamuni, the founder of Buddhism, was born in the Year of the Horse. In each Year of the Horse, gods gather around the sacred mountain and lake. It is said that walking around the mountain in the Year of the Horse can increase accumulated merits by 12 fold. So, in the Year of the Horse, more Tibetans worship sacred mountain; and if one goes to the sacred mountain, one must go to the sacred lake", has become of folk custom. All pilgrims wash their bodies, heads, faces and eyes using the lake water to remove disaster and diseases.
Some even carry jars to bring water back as gifts to their relatives and friend.