A day trip from Gangtok to Tsomgo Lake and Nathula Pass is the most popular excursion in Sikkim. The road climbs from forests to snow-covered slopes, reaching a glacial lake and the India–China border at over 4,000 metres. Because it is a protected border area, planning and permits are essential.
Tsomgo (Changu) Lake
- Altitude: about 3,750 metres.
- Distance from Gangtok: about 38–40 km, 2–2.5 hours.
- An oval glacial lake, sacred to local people, that changes colour with the seasons and often freezes in winter.
- Yak rides, momos and hot tea are available at stalls by the lake.
Baba Harbhajan Singh Mandir
A shrine dedicated to an Indian Army soldier, revered as a protector of soldiers in the region. Visitors stop here on the way to or from Nathula. The "New Baba Mandir" is the one most tourists visit.
Nathula Pass
- Altitude: about 4,310 metres.
- One of the trading passes between India and Tibet (China), historically part of the Silk Route.
- Visitors can see the border fence and the army memorials.
- Open on specific days of the week for Indian nationals only, subject to weather and administrative decisions.
Permits
- Permits for Tsomgo and Nathula are arranged through registered travel agents in Gangtok, usually a day in advance.
- You need original photo ID and passport-size photographs.
- Tourists generally must travel in permit-registered local vehicles.
- Nathula has a daily cap on visitors, so book early in peak season.
- Foreign nationals may visit Tsomgo with permits but not Nathula.
Rules change, so always confirm the current process.
Best Time to Visit
- December–March: snow around the lake and passes – very popular, but roads may close after heavy snowfall.
- April–May: melting snow and flowers; pleasant weather.
- October–November: clear skies.
- June–September: monsoon – landslides and fog are common.
How to Plan the Day
- Start early from Gangtok (around 7–8 am).
- Reach Nathula first (if permitted), then Baba Mandir, and Tsomgo Lake on the way back.
- Return to Gangtok by mid-afternoon.
Altitude Tips
- Spend at least one night in Gangtok before this trip.
- Do not run or exert yourself at the top.
- Keep sipping water.
- Limit time at Nathula.
- Children, elderly travellers and people with medical conditions should consult a doctor; some may be advised not to go.
What to Wear
- Heavy jacket, thermals, gloves, woollen cap
- Waterproof shoes (gumboots can be rented near the lake in snow)
- Sunglasses and sunscreen
Tips
- Photography is restricted at sensitive army areas – follow instructions.
- Carry cash for snacks and rentals.
- Respect the lake's sanctity – do not throw anything in it.
Frequently Asked Questions
Do I need a permit for Tsomgo Lake?
Yes. Permits are arranged through registered agents in Gangtok, usually a day before.
Can foreigners visit Nathula Pass?
No. Nathula is generally open only to Indian nationals; foreigners may visit Tsomgo Lake with permits.
Is Nathula open every day?
No. It opens on specific days for tourists, subject to weather and administration.
When can I see snow at Tsomgo Lake?
Usually from December to March.
How far is Tsomgo Lake from Gangtok?
About 38–40 km, roughly 2–2.5 hours.
Plan Your Trip with On Travel
We arrange Tsomgo and Nathula permits, local vehicles and Gangtok stays as part of our Sikkim packages.
- Phone / WhatsApp: +91 9220564155
- Email: info@ontravel.in
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Related reading: Sikkim Trip Cost · How to Reach Sikkim · Sikkim Food Guide
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