This is the most popular trek in Bhutan. The Snowman trek is the most difficult trek in Bhutan, because one has to walk and camp at high altitude for nearly three weeks. As long as one has no problems with the high altitude and the weather is good, it is not a particularly difficult trek. But, if something were to happen along the way, someone would have to carry you down to the nearest house, or try to find a telephone to get a helicopter from Thimphu. Both are often several days' walk. Initially, many people planned and wanted to go with us on the trek, but in the end they all bailed out and only two of us went.his trip offers a rare opportunity to visit one of the most isolated communities in the world. The high valleys of Lunana are situated below the world's highest unclimbed mountain, Gangkar Puensum, and are cut off from the rest of the world by snow on the passes for six or seven months of the year. Until 1994 this area was strictly off limits to foreigners. Trekking into Bhutan 's central mountain range, this trip follows yak herders trails across high passes and travels among some of the last virgin peaks of the Himalaya, in a breath-taking landscape that has seen relatively few foreign visitors.