Gangkhar Puensum (Dzongkha: གངས་དཀར་སྤུན་གསུམ་, romanized: Kangkar Punsum, alternatively, Gangkar Punsum or Gankar Punzum) is the highest mountain in Bhutan and the highest unclimbed mountain in the world, with an elevation of 7,570 metres (24,836 ft) and a prominence of 2,995 metres (9,826 ft). In Dzongkha language, its name means "White Peak of the Three Spiritual Brothers".
Gangkhar Puensum lies on the border between Bhutan and Tibet. After Bhutan was opened for mountaineering in 1983, there were four expeditions that resulted in failed summit attempts in 1985 and 1986.
In 1994 Bhutan banned the climbing of peaks over 6,000 metres and since 2003, all mountaineering has been banned in Bhutan.
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