Tsum Valley Trek: Mystic Buddhist Trails in Nepal

There is a corner of Nepal where the houses are built from stone and stacked like swallow nests, where Buddhist pilgrims still walk clockwise around mani walls that have stood for five centuries, and where the mountains rise above 7,000 m without a single tour-group flag in sight. That corner is the Tsum Valley — sometimes called the 'Hidden Valley' — and it is, in my honest opinion, the most spiritually powerful trek in Nepal.

I trekked Tsum as part of a longer Manaslu circuit in November 2024, and I want to share the full guide I wish I had read before going: where to start, how to combine it with Manaslu, what the permits cost, and what to expect from a valley that only opened to foreign trekkers in 2008.

Where Is Tsum Valley and Why Is It Called 'Hidden'?

Tsum sits on the northern side of the Ganesh Himal range, accessed via the same trailhead as the Manaslu Circuit (Soti Khola, 130 km from Kathmandu). The valley branches off at Lokpa on day three of the Manaslu trek, and you climb north-east into a Tibetan Buddhist cultural world that has been isolated from the rest of Nepal for centuries.

The name comes from the Tibetan word tsombo meaning 'vivid' or 'bright' — a reference to the valley's clear, sharp light. The local Tsumba people are ethnically Tibetan, speak a dialect of Tibetan, and have practised the same form of Tibetan Buddhism for over 1,000 years. The valley contains important pilgrimage sites including the Mu Gompa monastery (founded in 1895) at 3,700 m and the Milarepa Cave, where the 11th-century yogi Milarepa is said to have meditated.

For cultural context, see UNESCO's Intangible Cultural Heritage in Nepal for background on Tibetan Buddhist traditions in the Nepali Himalayas.

Tsum Valley Trek Itinerary (Standalone, 12–14 Days)

Most trekkers combine Tsum with Manaslu Circuit (16–18 days total). But you can also do Tsum as a standalone out-and-back route from Soti Khola, which is what I'll describe here. The benefit of the standalone version is that you do not need to cross the 5,106 m Larkya La — making Tsum accessible to trekkers who cannot handle Manaslu's altitude.

Day	From → To	Walk Hrs	Altitude (m)
1	Kathmandu → Soti Khola (jeep)	—	730
2	Soti Khola → Lokpa	6	2,040
3	Lokpa → Chumling	5	2,386
4	Chumling → Chhokangparo	5	3,010
5	Chhokangparo → Nile / Chhule	4	3,361
6	Nile → Mu Gompa	3	3,700
7	Acclimatization at Mu Gompa + visit Milarepa Cave	—	3,700
8	Mu Gompa → Rachen Gompa	4	3,240
9	Rachen Gompa → Chhokangparo	5	3,010
10	Chhokangparo → Lokpa	5	2,040
11	Lokpa → Soti Khola	6	730
12	Soti Khola → Kathmandu (jeep)	—	1,400

Tsum Valley Permits and Costs

Permit / Item	Cost (USD)
Tsum Restricted Area Permit (first 8 days)	$40 (Sep–Nov)	$30 (other months)
Tsum Restricted Area Permit (per extra day)	$7	$5
Manaslu Conservation Area Permit (MCAP)	$15
TIMS Card	$10
Licensed guide (per day)	$25–$30
Tea house full board (per day)	$22–$28
Total 12-day standalone (mid-range)	$900–$1,200

If you combine Tsum with Manaslu Circuit, the restricted-area permits stack — you pay both the Tsum permit and the Manaslu restricted-area permit. This makes the combined trek more expensive but gives you the best of both worlds: the spiritual depth of Tsum plus the high-pass drama of Manaslu's Larkya La.

Best Time to Trek Tsum Valley

March to May (spring) is the absolute best time — rhododendrons in the lower valley, warm days, and the Buddhist festivals at Mu Gompa usually fall in late spring. October to November is also excellent, with crystal-clear skies but colder nights. The valley is largely snowbound from December to February.

Monsoon (June to September) brings leeches and slippery trails but is the time when local crops are growing and the valley is at its most 'lived-in'. If you can handle the rain, this is when you see Tsumba life as it really is.

What to Pack for Tsum

• 3-season sleeping bag rated to −10 °C — sufficient for spring and autumn
• Down jacket — evenings at Mu Gompa get to −5 °C even in October
• Headlamp + spare batteries — electricity in upper Tsum is solar-only
• Cash — no ATMs anywhere in the valley; bring 25,000–35,000 NPR
• Scarf or buff — strong winds above Chhokangparo
• Earplugs — dogs and roosters in every village
• Modest clothing for monastery visits — cover shoulders and knees at Mu Gompa and Rachen Gompa

For the full checklist, see our ultimate Nepal trekking packing list — most of the gear advice applies directly to Tsum.

How Hard Is Tsum Valley?

Tsum is moderate — easier than Manaslu Circuit because there is no high pass. The maximum altitude is 3,700 m at Mu Gompa, which is comfortable for most people as long as you acclimatize properly. Walking days are 4–6 hours on well-maintained trails. The only genuinely tough section is the descent from Lokpa back to Soti Khola if you are tired at the end of the trek.

Tsum is a good option for trekkers who want a culturally rich, low-altitude Himalayan experience without the risk of a 5,000 m pass. It is also a great choice for older trekkers or those with mild altitude sensitivity.

Mu Gompa and Milarepa Cave — The Highlights

Mu Gompa is the highest and most remote monastery in the Tsum Valley, sitting at 3,700 m beneath the Ganesh Himal. It was founded in 1895 and currently houses around 70 monks. Visiting at dawn (5:30 am) for morning puja is one of the most moving experiences I have had in Nepal — bring a small donation (500–1,000 NPR is appropriate) and sit quietly at the back.

About an hour's hike above Mu Gompa is the Milarepa Cave, where the legendary 11th-century poet-yogi Milarepa is said to have meditated. There is a small shrine inside the cave and a stunning view back across the valley. If you have a free afternoon at Mu Gompa, do not miss it.

Tsum vs Manaslu vs Nar Phu — Which Restricted-Area Trek?

If you want raw, hard mountain trekking with a high pass: Manaslu Circuit. If you want Tibetan culture and canyon scenery: Nar Phu. If you want spiritual depth, monasteries, and a more moderate altitude: Tsum Valley. Honestly, all three are superb — and the combined Manaslu + Tsum trek is one of the best three-week treks on the planet. Our Manaslu Circuit guide has more on the combined route.

Tsum Valley will not stay this quiet forever. A road is being surveyed up the Budhi Gandaki as I write this, and within ten years the trailhead will move deeper into the mountains. Go now, while the valley still feels truly hidden.