Tsum Valley Trek

What a beyul is, and why it changes the trek

In Tibetan Buddhist tradition a beyul is a valley concealed by Padmasambhava as a refuge — a place meant to be found in difficult times and treated as sacred ground rather than as territory. Tsum is one of them, and unlike most beyuls the designation still shapes daily life rather than surviving only in a guidebook footnote.

The clearest expression of that is a community vow against killing animals. It holds: there is no slaughter in the valley, hunting is prohibited by local agreement rather than by park regulation, and the wildlife behaves accordingly — blue sheep and Himalayan tahr are noticeably unbothered by people here in a way they are not elsewhere in Nepal.

This changes what the trek is. Tsum is not a scenery route. The mountains are good but they are not the reason anyone goes; you go for a lived Tibetan Buddhist landscape of gompas, nunneries, mani walls and caves, reached slowly on foot. If that is not what you want from fourteen days, book Langtang or the Annapurna Circuit instead — both are better mountain treks and neither pretends otherwise.

The permit rules

Tsum sits inside the restricted Manaslu region and the conditions are strict.

Requirement	Detail
Restricted Area Permit	Tsum-specific, issued only through a registered Nepali agency
MCAP	Manaslu Conservation Area permit, required alongside it
No minimum party size	The two-person rule was dropped in March 2026
Licensed guide	Mandatory as a condition of the permit
Checkpoints	Jagat, Lokpa, Chumling, Chhekampar and again at Mu Gompa
Seasonal fee	Higher September to November than the rest of the year

All permits are included in the price and arranged by us. Until March 2026 a restricted-area permit needed two trekkers on it; that rule has been dropped, so a solo traveller can now be permitted individually. What has not changed is that the permit must come through a registered agency and a licensed guide is mandatory.

How hard is it?

Moderate, and it is worth explaining why a fourteen-day trek gets that grade rather than a higher one. The maximum altitude is about 3,700 m at Mu Gompa, which is lower than the sleeping altitude of most well-known Nepali treks and means altitude sickness is a manageable rather than dominant concern.

What makes it work is length rather than intensity. You are walking for eleven days, mostly five to seven hours, through a gorge that climbs steadily from around 900 m at Machha Khola to 3,700 m at the head of the valley — a gradual profile spread across a week, which is close to ideal.

The two genuine difficulties are the lower gorge, where the trail is narrow, exposed in places and subject to rockfall, and the sheer number of consecutive walking days. Fitness matters here more than altitude tolerance.

The three places people remember

Mu Gompa

At around 3,700 m, at the very head of the valley, an hour or so from the Tibetan border. It is the largest and remotest monastery in Tsum, set on open ground with nothing above it but grazing and the frontier ridge. Accommodation is in the monastery guesthouse, which is cold and plain and the point of the whole trek for most people who come.

Rachen Gompa

A nunnery on the valley floor near Chhekampar, and one of the largest in the Nepali Himalaya, home to a substantial community of Buddhist nuns. The interior murals are the finest in the valley. It is a functioning religious institution, so photography inside is by permission and often refused — ask, and accept the answer.

Piren Phu

A cave associated with Milarepa, the eleventh-century yogi and poet who is among the most significant figures in Tibetan Buddhism and who is said to have meditated here. It is a short detour near Chhekampar, with rock carvings and prayer flags, and it is a place of active pilgrimage rather than a monument.

Behaving well in a valley like this

We would rather set this out than have a client get it wrong.

• Walk clockwise around mani walls, chortens and stupas — left shoulder to the structure. This is not decoration; it is the correct way to pass.
• Ask before photographing people, interiors and ceremonies. In the nunneries the answer is often no.
• Do not bring meat into the valley or ask for it. The vow against killing is the defining fact of the place and there is no meat to be had in any case.
• Remove shoes entering a gompa, and do not point your feet at an altar or a person.
• Give to the monastery, not to children. Handing sweets or money to children on the trail is well-meant and does real damage; a donation at the gompa reaches the community properly.

Your guide will prompt you on all of this. None of it is difficult and it is the difference between being a visitor and being a problem.

Adding the Manaslu Circuit

Tsum branches off the Manaslu Circuit trail at Lokpa, which means the two combine without backtracking. The joint trip runs to around eighteen to twenty days and adds the Larkya La at 5,106 m — a serious pass and a completely different kind of day from anything in Tsum.

Whether to combine them is a real decision rather than an upsell. Tsum alone is a contemplative trek at modest altitude; adding Manaslu turns it into a high-pass expedition with a cultural first half. They are not the same holiday. We are happy to talk it through honestly before you commit.

Accommodation and food

Simple lodges and homestays throughout, with the monastery guesthouse at Mu Gompa. Rooms are plain, unheated apart from the dining stove, and bathrooms are shared or outside. Electricity is solar and unreliable above Chumling.

Food is vegetarian by circumstance rather than by menu policy — dal bhat, potatoes, noodles, eggs, seasonal greens, and a great deal of tea. If you are a committed carnivore, fourteen days here will test you more than the walking will.

Season

September to November gives the most settled weather and the valley at its most active, with festivals in the gompas through the autumn. March to May is warm lower down, with rhododendron in the gorge and the upper valley still cold.

Winter empties the upper valley — Mu Gompa is barely habitable and many families move down. The monsoon is genuinely dangerous in the lower gorge because of landslides on the Machha Khola section, and we do not run it.

Where this trek goes

• Tsum Valley — A sacred Himalayan valley closed to outsiders until 2008, where killing animals has been forbidden by community agreement for over a century
• Kathmandu Valley — Seven UNESCO Monument Zones within an hour of each other

Related activities: Trekking in Nepal, Cultural & Heritage Tours.

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