Lunana Valley  :

One of the remotest human settlements in Bhutan, the people of Lunana reside among the Himalayan glaciers. It takes four to nine days on foot to reach the villages in Lunana. People of Lunana mostly depend on yak and sheep rearing. The nomads also harvest  Cordyceps Sinensis. Many Lunaps migrate to lower altitudes to escape the long harsh winters. You can also visit Tshojong Dzong and Toenchoe Lhakhang in Lunana.