Until recently the Upper Mustang was one of the most isolated and unexplored corners of the Trans-Himalayan region. Foreign trekkers were first allowed to visit in 1992. Since its opening this region has become a very special destination for trekkers, despite the expensive permit fees compared to other regions. Once Upper Mustang used to be a separate kingdom and still it looks like a kingdom of a different kind, not only because of its topographic uniqueness but also because of its untouched Tibetan culture, people and their traditions. New lodges have made this trek more comfortable these days.
On the Upper Mustang Trek you can explore many places and strange mysterious cave monasteries that are unique to the region. Some places are very ancient and have centuries of history to discover: places like the 2500-year-old Samdzong and Chosar villages or the walled capital city of Lo Manthang. Other ancient monasteries and castles of the 14th century are on the trails, like Luri, Yara and Konchok Ling. Fossils, which are believed to be older than the mountains, probably 3 billion years old, have been found. Colorful and unique rock formations along with canyons carved by the rivers are some of the most eye-catching sights of this region; the rock formations look like a genuine piece of artwork carved by a famous artist. Finally we can witness the lively day-to-day activities of the local people and their festivals.