Gangkhar Puensum
Gangkhar Puensum (Gangkar Punsum) is the highest mountain in Bhutan, commonly given as 7,570 m elevation and located on/near the Bhutan–Tibet border within the Lunana highlands (Lunana Gewog, Gasa District). It is widely reported as the highest unclimbed mountain in the world; Bhutan restricted mountaineering in stages (ban on >6,000 m in 1994; broader restrictions later) and subsequently prohibited mountaineering entirely, so summit attempts are not permitted from the Bhutan side.