Bhutan opens its mountains to climbers for a short period from 1983 to 1994, and the country's mountaineering history is correspondingly brief. Jhomolhari was climbed from Tibet in 1937 by F Spencer Chapman and a sherpa and again in 1970 by a joint Indian-Bhutanese team. A Bhutanese expedition scaled 4900m Thurigang, north of Thimphu , in 1983. Jichu Drake was attempted three times before it was successfully climbed in 1988 by an expedition led by doug Scott. Masang gang was climbed by a Japanese expedition in1985, and Gangkhar Peunsum (7541m) remains the highest unclimbed peak in the world after unsuccessful attempts by Japanese and British team in the 1980s.