During your 11-day Upper Mustang Trek in Upper Mustang, you will enter a place that feels like a living museum. The geography of the trans-Himalayan rain shadow, combined with centuries of political history, has preserved its culture, traditions, and heritage in a way that is rarely found anywhere else. Here are the main things you will experience during your journey into the former Kingdom of Lo:
Lo Manthang
Lo Manthang (3,840 m) is one of the last surviving walled kingdoms in the Himalayan region. Founded in 1440 by King Ame Pal, the old settlement is still protected by a mud wall nearly 6 m high, built to defend the ancient Kingdom of Lo from invasions and desert winds. Even today, the alleys, whitewashed mud houses, prayer wheels, and centuries-old traditions make the town feel almost frozen in time.
At the center of the walled city stands the four-story royal palace, which was the residence of the Lo dynasty for nearly 25 generations. Lo Manthang is also home to some of the Himalayas’ oldest Buddhist monasteries such as Jampa Gompa and Thubchen Gompa, famous for their rare 15th-century wall paintings and handmade clay statues. A short trip north leads to the Chhoser Valley sky caves, where researchers discovered hand-carved cave chambers, ancient burial remains, and meditation rooms believed to be around 2,500 to 3,000 years old. These caves reveal that people were living in this dry Himalayan valley long before modern Nepal existed.
Spin Prayers at the Longest Mani Wall of Ghami
Near the village of Ghami, trekkers can visit one of the most sacred landmarks of Upper Mustang: the massive Ghami Mani Wall. More than 305 m long, it is considered the longest Mani wall in the entire Mustang region. Its bright red, white, and bluish-grey mineral colors represent important Buddhist symbols linked to compassion, wisdom, and protection.
The top of the wall is covered with thousands of slate stones sculpted with the Buddhist mantra “Om Mani Padme Hum.” Many of these stones were engraved slowly over generations by monks, pilgrims, and local families as acts of faith and prayer. You can pass the wall from the left side in a clockwise direction while spinning prayer wheels or offering prayers for safe travel. In the strong Mustang winds, the sound of fluttering prayer flags and spinning wheels creates a calm atmosphere that feels connected to the spiritual life of the Himalayan desert.
Kali Gandaki Gorge & River with Shaligram
The Kali Gandaki Gorge (also known as the Andha Galchi) is one of the deepest river gorges on Earth, located between Annapurna I and Dhaulagiri I. In some areas, the vertical difference from the riverbed to the mountain summits is more than 5,500 m. Over millions of years, the Kali Gandaki River excavated this canyon through the Himalayas by forming a natural corridor that connected ancient trade routes between Nepal and Tibet.
The Kali Gandaki River is also famous for its Shaligrams, smooth black fossil stones found on the riverbanks. Geologically, these are petrified cephalopods, ancient sea organisms that lived around 150 million years ago in the ancient Tethys Ocean before the Himalayas even existed. When the Indian and Eurasian tectonic plates collided nearly 50 million years ago, the ocean floor rose upward to form the Himalayan mountains, leaving these fossils trapped inside the rocks. For millions of Hindus, Shaligrams are not ordinary fossils but holy symbols of Lord Vishnu.
Tibetan Buddhist Culture Exploration & Tiji Festival
Since the ancient Kingdom of Lo was closed to outsiders until 1992, this long isolation preserved Tibetan Buddhist traditions, language, architecture, and rituals that have slowly disappeared in many other Himalayan regions. Most monasteries here belong to the Sakya school of Tibetan Buddhism (the Ngor lineage) and can be identified by their walls painted with vertical red, white, and grey stripes.
The cultural highlight of the region is the Tiji Festival held every spring inside the royal courtyard of Lo Manthang. This three-day masked dance ceremony represents the victory of good over destructive forces and drought. Monks dressed in colorful silk robes and large symbolic masks perform traditional dances that tell the story of Dorje Jono defeating a demon threatening the kingdom. On the final day, people destroy a figure made of barley dough that symbolizes evil, while prayers, drums, and Tibetan horns echo all over the walled city.