Mustang is a remote region in the Himalaya, sandwiched between Tibet and Annapurna mountain range.It is part of Nepal, but culturally it is Tibetan Buddhist. There is a distinction between Lower Mustang (from Ghassa to Kagbeni) and Upper Mustang (beyond Kagbeni to Tibet's border). Lower Mustang starts from Ghassa which is known to have the deepest river gorge in the world Kali Gandaki, where the landscape is still lush and green and the further north you get, the landscape becomes more arid and desert-like. Lower Mustang is home to the holy town of Muktinath, Marpha village famous for its apples and a traditional stone village of Kagbeni - a gateway to Upper Mustang. There are countless old monasteries and places of worship dotted along this route. Upper Mustang is located to the north of the mountain giants of Dhaulagiri and Annapurna and geographically it is part of the highlands of Tibet. It is a vast high arid valley, characterised by eroded canyons, colourful stratified rock formations and has a barren, desert-like appearance. Traditional villages, colourful chortens, ancient walled city of Lo Manthang and thousands of cave dwellings high up in the cliffs are the biggest attractions of this area. Mustang lies in the rain shadow of the Annapurna range and it receives very little rain all year round, making it the perfect destination for trekking during monsoon season June-August. Untouched by modern civilization, life in Mustang goes on as it has for centuries in an unhurried pace.