Mustang is a sacred and hidden world of Nepal known as Buddhist kingdom called Lo. The LO kingdom is part of Tibetan empire related to Tibet. Mustang trek start from the lowest kaligandaki river at kagbeni to highest range of khumjung Himal in height of 6700m. Mustang in popular as an ancient trade centre for both the people from Jomsom, kagbeni and around as well as kaligandaki valley and Tibetan.
Upper Mustang is sacred and a restricted area and up till 1992 it was forbidden for foreign visitors to enter the kingdom. Nowadays foreigners are welcome to Upper Mustang for a permit fee of US$ 500 (to be arranged through a trekking agency and valid for 10 days which is still known as sacred valley, each additional day costs US$ 50).These days accommodation in guesthouses is possible along the whole trek. While staying there you are welcome to sit with the owners in the kitchen. In Tibetan culture the kitchen is the center of the house and built like a kind of living room. So there is no better way to learn a bit about the daily life than spending time in the kitchen! Trekking in Mustang is a great option during the monsoon months (June-August) as the region is in the rain shadow. However, it is best to add a day or two on each side of your itinerary for travel interruptions due to bad weather in the lowlands. While November is still a nice time to trek in Mustang keep in mind that seasonal migration takes place at this time and many residents from Lo Manthang and surrounding areas will move down to lower altitudes for the winter months. This may cause an inconvenience in restaurants and accommodation availability.