A boundary mountain range of Nyalam and Tingri counties, there are three peaks of an elevation of mora than 7,000 meters form the east to the west and the highest is 7,367 meters above sea level. Around these peaks are icy mountain slopes and forests of icy pagodas. The wonderful scene is that there are many glacier lakes around them, with the bigger one of the lake Colangma on the northern foot.

It is not easy to climb up these peaks. The frequent snowslides, icefalls and stoneslides on the icy slopes bring a lot so difficulties to the mountaineering. In 1987, the Sino-Japanese joint mountaineering team was first successful in climbing up these peaks.