This is a Trek into an area which is restricted, so it is something for the trekker who likes to walk on the lesser trodden track, you will need to give plenty of notice, so as to get the necessary permits.
Day 1: Pick up from bagdogra airport and driven to Sikkims capital Gangtok, you will pass through tea plantations, dense forests and pass by rivers and waterfalls, arrive at Gangtok, evening free to explore, overnight stay in hotel on a b&b basis
Day 2: Gangtok to Lachen, Leave the capital of Sikkim after breakfast and Travel for 125 kms to the little town of Lachen, overnight stay in B&B or Homestay
Day 3: Lachen(2700m) to Talem(3150m), start trek after breakfast, you will walk approx 8km through forests of Pine, Oak and rhododendrons, following the zemu chu river. overnight stay in tents
Day 4: Talem to Jakthang(3270m) start trek after breakfast, you will walk approx 5kms following the Llhonak river whos source is the Green lake through alpine pastures. overnight stay in tents
Day 5: Jakthang to Yabuk(3850m) start trek after breakfast, you will walk approx 8kms along the Llhonak river through alpine pastures to Yakbuk which is at the mouth of the zemu glacier. overnight stay in tents
Day 6: Yakbuk to Sona camp(4550m) start trek after breakfast, you will walk approx 7kms following the zemu glacier, today is a hard day walking across boulders and the glacial moraines but its worth it for the magnificent view of the most beautiful peak in the world Mount Siniolchu. overnight stay in tents
Day 7: This is a rest day to aclimatize to the altitude, you will be free to explore this region, over night stay in tents
Day 8: Sona camp to the green lake(5100m) start trek after breakfast, you will walk approx 6kms, 3kms there 3kms back, in full view of the mountains Siniolchu, Nepal peak, and the mighty Khangchendzonga, this is a hard journey but worth it see these peaks and the crystal clear waters of the green lake, return to Sona camp, overnight stay in tents
Day 9: Sona camp to Yabuk, after breakfast follow route down yabuk, overnight stay in tents
Day 10: Yabuk to Lachen, after breakfast follow route back down to Lachen, overnight stay in tents.
Day 11: after breakfast, return trip to Gangtok staying in hotel on a b&b basis
Day 12: after breakfast return trip to Bagdogra, trek ends