Upper Mustang: Nepal's Last Forbidden Kingdom Guide

Few places in Nepal feel as far from the rest of the world as Upper Mustang. Tucked behind the Himalayas near the Tibetan border, this high desert of red cliffs, ancient monasteries and whitewashed villages was closed to foreign visitors until 1992. Today it is still a restricted area, which keeps visitor numbers low and the culture intact. This guide to Upper Mustang explains what makes it special, how the walled capital of Lo Manthang looks and feels, what permit you need, and the best time to go. For route details and costs, read our Upper Mustang trek guide.

Why is Mustang called the forbidden kingdom?

For centuries Mustang was an independent Tibetan-influenced kingdom on the old salt trade route between Tibet and the plains of India. It later became part of Nepal, but its king remained a respected figure and the region stayed closed to outsiders for decades. After it opened in 1992, access was kept limited through a permit system. That is why people still talk about Mustang as the last forbidden kingdom: its Buddhist culture, language and architecture are closer to Tibet than to the rest of Nepal, and much of it has been preserved.

The walled city of Lo Manthang

Lo Manthang, the old capital, is a walled town of flat-roofed houses packed inside earthen walls. Its main gate opens onto narrow lanes, courtyards and a former royal palace. Inside are large, painted monasteries with murals, statues and prayer halls, including Jampa Lhakhang and Thubchen, which are among the oldest and most important in the region. Walk the lanes in the early morning, when villagers bring their animals out and the light on the walls is soft.

Cliffs, caves and monasteries

Beyond Lo Manthang, Upper Mustang is a landscape of eroded canyons and layered red, orange and grey cliffs. Hundreds of man-made caves cut into the rock, some of them thousands of years old, were once homes, shelters and meditation rooms. Chhoser has a cave complex on several levels, and monasteries such as Luri Gompa and Garphu hold ancient paintings. The villages along the way are small, with barley fields, apple trees where the altitude allows, and stacks of mani stones.

Prayer flags beside a stream and rocky slopes in a high Himalayan valley

The Kali Gandaki and the gateway villages

Most journeys start in Jomsom or Kagbeni, on the Kali Gandaki river, which flows through one of the deepest gorges in the world between the Annapurna and Dhaulagiri ranges. Kagbeni is a medieval-looking village at the entrance to the restricted area. Muktinath, a holy site for Hindus and Buddhists, lies nearby and is often combined with the trip. Because Mustang sits in the rain shadow of the Himalayas, it stays dry when most of Nepal is wet. For wider planning, see our Annapurna region page and the Mustang destination guide.

Permits and rules

Upper Mustang is a restricted area, so independent travel is not allowed. In general you need:

a special restricted-area permit, charged per person for a set number of days (at the time of writing, USD 500 for the first 10 days, with a daily fee after that);
an Annapurna Conservation Area permit;
a licensed guide, with a minimum group size set by the authorities, arranged through a registered agency.

Rules and fees change, so confirm the latest rules before you book. Our guide to trekking permits and TIMS fees explains how the permit system works across Nepal, and we arrange the paperwork for you.

How to get there: trek or jeep

On foot. The classic trek follows the Kali Gandaki north from Kagbeni and takes about 10 to 14 days, passing villages, monasteries and passes above 4,000 metres. Walking is the best way to see the landscape, but it needs good fitness and acclimatisation.

By jeep. A road now reaches Lo Manthang, so jeep trips are possible and take far less time. They are popular with people who want to see the region without a long trek, though the road is rough and the days are long. You can also combine a jeep with shorter walks.

By air. Most visitors reach the region by a short flight from Pokhara to Jomsom, or by a long road journey. Flights are weather-dependent, so keep spare days in your plan. For acclimatisation and altitude, read our guide to altitude sickness.

The best time to visit Mustang

The main season runs from about May to October. Because the region is in the rain shadow, summer rain barely reaches it, so you can visit during the monsoon when other trekking areas are wet. Spring is also the time of the Tiji festival, a three-day Buddhist festival in Lo Manthang with masked dances and monks in elaborate costumes. Winters are bitterly cold and many lodges close. Our best time to visit Nepal guide compares the seasons across the country, and the Nepal Tourism Board publishes official travel information.

How Mustang compares with other treks

Mustang is quieter than Everest or Annapurna, and the scenery is different: dry and dramatic instead of green and alpine. It suits people who are interested in Tibetan Buddhist culture, history and photography more than in high passes. If you want a more classic Himalayan route, compare it with the Annapurna Circuit or the Annapurna Base Camp trek. Our guide to less crowded treks in Nepal lists other quiet alternatives.

Frequently Asked Questions

Why was Upper Mustang closed to tourists?

It lies on the border with Tibet, and the area was kept closed to outsiders for political and security reasons until 1992. It remains a restricted area, which is why a special permit is required.

How much does the Upper Mustang permit cost?

At the time of writing it is USD 500 for the first 10 days, plus a daily fee after that, in addition to the Annapurna Conservation Area permit. Fees change, so check before you travel.

Can I visit Mustang in the monsoon?

Yes. Mustang is in the rain shadow, so it stays mostly dry in summer. The main difficulty is getting there, since flights and roads to the gateway can be affected by weather.