Simply the word restricted means not strictly forbidden. It means the trekking route which needs special permits or documents to trek through. Restricted area trekking refers to trekking in such areas that require the special permit for trekking from the government of Nepal, Kathmandu (Nepal Tourism Board & Nepal Immigration). It is also known as a special route in a sense because for an individual the permit is not issued, there must be minimum 2 people for issuing the permits. Upper Mustang and Upper Dolpo among few others are marked as restricted area trekking. Very few foreigners had visited this part of the world as it is probably one of the remote trekking trails of the world.
Upper Mustang trek is must be done an event for those trekkers who love trekking and adventures in these areas. It has various things to flourish like Tibetan culture, caves thousand years old and monasteries and many other scenic beauties. Numbers of filming and domestic tourist are increasing in this area due to its natural beauties and landscapes. These areas are nonrainy and also known as deserts of Nepal. Upper Mustang is comparative to Tibet because the cultures, traditions, norms, and values are pretty similar to each other. A king with his kingdom is still ruling this place. And also due to road accessibility, nowadays the visitors can make it a tourist destination as well. Bumpy jeep rides and mountain bike riding is itself an adventure for all and by using it they can have that experience of a lifetime.
Dolpo is listed as the at least developed district of Nepal. It is the most remote part of the country too. It was opened for trekking in 1989 by the government of Nepal. Dolpo is situated in between Tibetan plateau and Dhaulagiri Himalayan ranges. Shay Phoksundo National Park is the country’s largest national park and conservation area located in this region. The park inhabits Musk Deer, Himalayan Blue Sheep, and Snow Leopard. The National park is named after "Shey Phoksundo Lake", which is in a height of about 3600 M and it flows through Suligad River. The best time to travel this region is June & July when other trekking routes of Nepal are marked as off seasonable. During the months of October to December, freezing temperatures are expected. This trekking can be done thought-out the year except for few freezing months.
In Nepal, many trekking routes are open for FIT (Freelances Individual Trekkers) or in a proper group size, where there are some few trekking routes which are named as a restricted zone trekking and which are strictly controlled and authorized by the Government of Nepal for those FIT trekkers. One can only visit this trekking region after getting a permitting authority from the Department of Immigration Nepal. Licensed holder guides will be provided and for an individual trekker, a permit is not acceptable. Those who are interested in trekking in these routes must contact for legally registered trekking companies.
So that they will apply for the permits, which are based on your necessary documents by the Department of Immigration. At least they must be in a group (minimum two persons). Nepal Trek Adventures offers group joining facility to an individual trekker who is willing to go trekking in restricted areas of whole Nepal. Make sure that the expiry of visa is up to date to receive the special permits of Upper Dolpo, Upper Mustang and much other trekking and hiking trails of Nepal Himalayas. Permit entry cost for Upper Mustang & Upper Dolpo Treks is US$500 per person (for the first 10 days).