Thalay Sagar, Brigupanth, 1980. Iwa To Yuki N° 81 reported on more of the Japanese expeditions to the Gangotri region. Hiroyoshi Yano led an eight-man expedition which unsuccessfully attempted the American route on Thalay Sagar. Base Camp was made on September 14, 1980, Advance Base at 16,050 feet on the 17th and Camp I at 17,200 feet on the 22nd. This camp was swept by an avalanche on September 23 and so they moved it 100 meters. After climbing the couloir on the northwest face, they pitched Camp II at 19,750 feet on October 6, but gave up the attempt on the 9th. Six climbers led by Michio Tsukahara attempted Brigupanth. Base Camp was established at 15,425 feet on September 14 and Advance Base at 17,750 feet at the foot of the west ridge the next day. On September 21 Yoshio Konno and an American member of the group, Thomas Mark Rugo, were in Camp II. An avalanche swept over the Camp. Konno fell 100 meters and was saved, but Rugo was carried in the tent down to the glacier, where his body was found the next day. The expedition was given up.