Mustang trekking is one of the most mysterious trekking in Nepal. It has been one of the popular and most loved trekking destinations in the country. Mustang region lies in the western part of Nepal and is officially the name of the district having a Tibet like region. It is relatively easy trekking along the permitted route to Lo Manthang. It was open in October 1991. Mustang is situated on the head of Kali Gandaki River. The trekking to Mustang is all about having trekked through an almost tree-less barren landscape and a barren moonscape of eroded sandstone pillars and discontinuous moraine terraces, which together present a colorful mosaic made up principally of earthen reds, yellows and brown color mosaic. It is accessible either on foot or by airlines.