It is located about 30 km east-southeast of the snout of the Siachen Glacier.

The South Chong Kumdan, Kichik Kumdan (Thangman Kangri), Mamostong, and South Terong Glaciers all head on the slopes of Mamostong Kangri.

Mamostong Kangri has not seen a great deal of visitation due to its remote location and the unsettled political and military situation in the region.

The first ascent was made in 1984 by an Indo-Japanese expedition, via the Northeast Ridge, after a complicated approach.

The summit party comprised N. Yamada, K. Yoshida, R. Sharma, P. Das, and H. Chauhan.