Tangra Yumco is a salt lake in Tibet, China. It is in the southwest of Nyima County. Tangra Yumco is 835.8 square kilometres (322.7 sq mi), with a drainage area of 8,219.7 square kilometres (3,173.6 sq mi), an elevation of 4,528 metres (14,856 ft), length 71.7 kilometres (44.6 mi) and mean width 11.65 kilometres (7.24 mi). It is the holy lake of the Bön believers.