Mustang was once an independent kingdom, although closely tied by language and culture to Tibet. From the 15th century to the 17th century, its strategic location granted Mustang control over the trade between the Himalayas and India. At the end of the 18th century the kingdom was annexed by Nepal.
The trek passes through barren, arid but beautiful gorges. On the way, you'll find some mysterious cave dwellings on the cliffs. To this day no one knows who dug these 10,000 caves in Mustang.
Your final destination is Lo Manthang, the walled capital of the Kingdom of Lo. You'll have ample time to visit the amazing gompas and museums, not to mention the Raja's (King's) Palace.