Close to the ruins of Yamtung Kingdom, the Lake Tangra Yumco was the place where the most respected Goddess Gangzhuoma of the Bon stayed according to a legend. The lake is 4,530 meters above sea level.

(Comai has guesthouses for tourists to stay. On the eastern bank there are a few residents but no people on the western bank of the lake. Camp articles and food are necessities.)