The Upper Mustang trek leads you into the hidden kingdom of Mustang, also called Lo. The ultimate destination of this trek is Lo-Manthang, the capital of Upper Mustang. This medieval town is surrounded by a huge wall, and it not only offers its visitors beautiful views of the rugged landscape but also allows them to observe the Tibetan Buddhist culture that has been practiced in this region since many centuries ago.
In and around Lo-Manthang, hikers can discover ancient monasteries, Mani walls, Buddhist shrines, Gompas and Mandalas. Lo used to be a part of the Tibetan empire and you will see houses built in the Tibetan style with white washed walls.
Mustang is an arid, treeless land of monasteries. The best season is March to October, although Upper Mustang is in the rain shadow region of Nepal, meaning trekkers can also visit during the monsoon season. Several years ago, trekking used to be organized as camping or tenting treks. Now, the area is developing simple tea houses.