Mustang is a very popular trekking region in Nepal since the home Ministry of Nepal announced the opening of restricted areas in October 1991. However, there is strict control over obtaining special permits from the department in order to protect local tradition from outside influence as well as to protect their environment. The region of the Kaligandaki, from the Tibetan border south to kagbeni, is Manthang passes through and almost barren landscape. A steep rocky trail climbs up and down hills with panoramic views of Nilgiri,Annapurna,Dhaulagiri and several other peaks, making a truly memorable trek.