Upper Mustang is a high mountain desert. It looks like a Tibetan land, and it is a restricted trekking area. Upper Mustang trek can be done in all seasons.
See here for detailed information: https://www.frolicadventure.com/upper-mustang-trek
More info: frolicadventure.com
Building in Upper Mustang
High Himalayan derest
Golden hills
Upper Mustang trail
