Nature · Chhoser
Walk the cave cliffs of the Chhoser valley
A gentle walk along the floor of the Chhoser valley beneath cliffs pitted with rows of man-made caves, with a guide who explains the geology, the history of the caves and the finds made in similar caves across Upper Mustang. Best in low light for photographs.

From Chhoser village we walk along the stream through fields and willows, with the valley walls rising on either side. The cliffs are made of soft sedimentary rock in bands of grey, cream and ochre, easy to dig but quick to erode. Along them run rows of dark openings, some within reach, many high and long cut off as the cliff faces have retreated. Your guide will help you pick out stacked caves, linked by internal passages.
As we walk, the guide tells the story of the caves of Mustang, about 10,000 of them across the district: burial chambers 2,000–3,000 years ago, homes in unsettled times, meditation cells and libraries later. Since the 1990s, teams of archaeologists and climbers have found human remains, Buddhist paintings and manuscripts in caves across Upper Mustang, though many caves remain unexplored. Every cave you see has a story still waiting to be told, and the guide will share what is known.
The walk is easy, mostly flat and about 2–3 hours at a slow pace. In the early morning or late afternoon, low light picks out the cave openings in sharp shadow, the best time for photographs. Do not attempt to climb to any cave; the rock is unstable and the sites are fragile heritage. Carry water, sun protection and warm layers, since the valley can be cold in shade. Binoculars help.
Good for
Questions
Who made the caves in Mustang?
No one knows exactly. The caves were dug by hand into soft cliffs over many centuries, by people whose identity is still studied. Archaeologists have found that some were used as burial chambers as early as about 1,000 BC, others as homes from around the 10th century, and later as meditation cells and storerooms for monasteries.
Can I climb into the sky caves around Chhoser?
Only the Jhong cave and a few other managed caves are open to visitors. The high caves on the cliff faces are dangerous to reach, as the rock is soft and crumbling, and they are fragile archaeological sites. Climbing to them without permission and proper equipment is unsafe and damages heritage. Enjoy them from the valley floor.
Are the Mustang caves a UNESCO site?
The Mustang caves have been on UNESCO's tentative list since 1996, which means Nepal has put them forward for consideration, but they are not yet inscribed as a World Heritage Site. Research and conservation work continues. Check current status before you travel, as listings can change.
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