Green Lake
A true expedition to the Zemu Glacier — Sikkim's rarest trail
Why this trek is special
- ✦Stand at the snout of the mighty Zemu Glacier below Kanchenjunga's north face
- ✦A restricted valley walked by only a handful of trekkers each year
- ✦Siniolchu — 'the most beautiful mountain in the world' — up close
- ✦True expedition flavour: remote camps, wild country, no crowds
Difficulty: Difficult
Rated 5/5 on the TrekNova Adventures scale — based on altitude gain, trail length, terrain and exit options.
Altitude profile
Day-wise itinerary
Tap a day to expand. Distances and timings are for an average fit trekker.
Wind up the Teesta valley to Sikkim's capital. Final permit checks, gear inspection and expedition briefing with the team.
What's included
✓ Inclusions
- ✓ All meals from Gangtok to Gangtok
- ✓ Expedition tents, -20°C sleeping bags & mats
- ✓ Expedition leader + high-altitude support staff & porters
- ✓ All permits, liaison formalities & camping charges
- ✓ Transport Gangtok ↔ Lachen
- ✓ Oxygen backup, comprehensive medical kit & daily health checks
✗ Exclusions
- ✗ Transport NJP/Bagdogra ↔ Gangtok (shareable cab)
- ✗ Hotel stay in Gangtok & Lachen beyond the plan
- ✗ Personal expenses, tips & insurance
Permits & paperwork
This is an expedition-level product — Green Lake lies in a restricted zone and requires multiple clearances (Army, Forest Department and Home Department) that can only be arranged through registered agencies like ours. Departure dates are confirmed only after permits are issued, so book 60+ days ahead. Indian citizens need a govt. photo ID; foreign nationals need a Protected Area Permit (PAP) for Sikkim and additional Home Department clearance.
Backpack offloading
Don't want to carry your rucksack? Our mules and porters will carry it camp-to-camp while you walk with a light daypack. Bags must be under 9 kg, soft-sided, without wheels.
Cancellation policy
When to do Green Lake? Month-by-month guides
Weather, temperatures and packing for every month — green months are in season.
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