Mustang trek is an exploration of the concealed valleys of upper Mustang in Nepal, nestled between Tibet and the Himalayas – a place different from the rest of the world. The wall city of Lo manthang used to be a part of Tibetan kingdom of Gungthang until 1830s. The early history of Lo manthang http://www.nepalguideinfo.com/mustang-trek/ Nepal Mounatin Guide TeamS (Nepal Planet Treks and Expedition Pvt. Ltd.) GPO: 4453 Paknajol ,Thamel, Kathmandu, Nepal Phone: +977-1-4252196 Mobile: +977-9841613822 (Sanjib) Fax: +977-1-4252196