Sikkim's Hidden Himalayan Paradise Is Open Again! Green Lake Trek Reopens After Four Years, Offering Breathtaking Mountain Views

Adventure lovers have a reason to celebrate as Sikkim's iconic Green Lake Trek has reopened after remaining closed for nearly four years. The development is expected to give a fresh boost to adventure tourism in North Sikkim, offering trekkers another opportunity to explore one of the most spectacular high-altitude destinations in the Himalayas.

The reopening was made possible through collaboration with Lachen Zumsa and Khangri Tours, Treks & Expeditions. Demonstrating the successful reopening of the route, seven Russian trekkers completed the challenging expedition on November 8, 2026.

Located at an altitude of approximately 5,050 metres, Green Lake is among the most scenic trekking destinations in the region. It also serves as a base camp for expeditions to Mount Kanchenjunga, the world's third-highest mountain.

What Makes the Green Lake Trek So Special?

Green Lake is known for its spectacular Himalayan landscapes, crystal-clear waters and breathtaking views of surrounding snow-covered mountains.

The trekking route passes through dense forests, alpine meadows and beautiful rhododendron-covered landscapes. Trekkers can also enjoy magnificent views of Mount Kanchenjunga, Mount Siniolchu and several other Himalayan peaks.

The region is also rich in biodiversity. Visitors may encounter rare Himalayan flowers and, with considerable luck, wildlife such as red pandas and snow leopards in their natural habitat.

For adventure enthusiasts looking to experience the untouched beauty of the Himalayas, this trek offers a combination of challenging terrain, remote landscapes and unforgettable mountain scenery.

Where Does the Green Lake Trek Begin?

The journey generally begins from Lachen, a picturesque mountain town in North Sikkim located approximately 107 kilometres from Gangtok.

From Lachen, trekkers follow a challenging mountain route towards Green Lake, passing through remote Himalayan landscapes and high-altitude terrain.

The expedition generally takes around 10 to 12 days, depending on the itinerary, weather conditions and trekking arrangements.

The nearby Thangu region is another attraction for travellers exploring this part of North Sikkim. Its scenic surroundings and traditional mountain settlements make it an interesting stop during the journey.

Best Time to Visit Green Lake

Choosing the right season is important for enjoying clear mountain views and relatively favourable trekking conditions.

The two commonly recommended trekking windows are:

• April to June: Spring and early summer bring blooming rhododendrons, greener landscapes and relatively pleasant daytime conditions.

• September to November: Post-monsoon conditions can offer clearer skies and excellent mountain visibility, although temperatures become increasingly cold.

Weather in high-altitude Himalayan regions can change rapidly. Trekkers should always check local weather forecasts, route conditions and official permissions before planning their expedition.

Permits Required for the Green Lake Trek

Since Green Lake is located in a restricted border region of North Sikkim, travellers cannot simply arrive and begin trekking independently.

Special permissions and arrangements are required. Depending on the route and applicable regulations, these may include a Restricted Area Permit and other authorisations for the protected region.

Indian and foreign nationals may have different eligibility requirements. Foreign travellers should confirm the latest rules with authorised tour operators and the relevant government authorities before making bookings.

It is also advisable to travel through an experienced trekking operator familiar with the region.

How to Prepare for This Challenging Himalayan Trek?

At an altitude of approximately 5,050 metres, the Green Lake Trek is not suitable for beginners without proper preparation. Reduced oxygen levels, steep trails and unpredictable weather can make the expedition physically demanding.

Here are some important preparation tips:

1. Build Cardiovascular Fitness

Start preparing four to six weeks before the expedition. Running, cycling, swimming and brisk walking can help improve stamina and cardiovascular endurance.

2. Practise Hiking

Whenever possible, include regular hikes in your training routine. Gradually increase walking distances and practise carrying a backpack to prepare for long trekking days.

3. Allow Time for Acclimatisation

High altitude can cause acute mountain sickness. Follow a gradual ascent schedule and allow your body sufficient time to adjust. Never ignore symptoms such as headaches, nausea, dizziness or unusual fatigue.

4. Carry Essential Medicines and First Aid

Pack personal prescription medicines, pain relief medication, bandages, blister treatment supplies and other basic first-aid essentials. Consult a doctor about altitude-related precautions before departure.

5. Invest in Proper Trekking Equipment

Warm thermal layers, insulated jackets, waterproof outerwear, gloves, suitable trekking boots and comfortable socks are essential. Carrying a reliable sleeping system and weather-resistant backpack is also important.

6. Carry Sufficient Food and Water

Energy bars, nuts, dried fruits and chocolates can provide convenient energy during long trekking days. Drink adequate water and carry suitable water purification equipment.

Avoid alcohol during the expedition, particularly while acclimatising to high altitudes.

Why the Reopening Matters for Sikkim Tourism

The reopening of Green Lake Trek is an encouraging development for Sikkim's adventure tourism industry. It brings attention back to one of North Sikkim's most spectacular trekking routes and creates new opportunities for local guides, porters, accommodation providers and tour operators.

For mountain lovers, the reopening means an opportunity to experience a remote Himalayan destination that has remained inaccessible to trekkers for several years.

However, given the challenging altitude and sensitive ecological environment, responsible tourism, proper preparation and compliance with local regulations remain essential.

With its dramatic mountain scenery, pristine landscapes and proximity to Kanchenjunga, Green Lake could once again become one of India's most sought-after destinations for experienced trekking enthusiasts.