Day 6: Today After breakfast the trek starts from Zema to Tallem altitude (3468m). 5-6 hours walk along the Zemu River towards west. The going in this section is usually slow as the path travels through water logged Rhododendron thickets and fallen tree trunks. Lunch at Tallem and in the afternoon free for excursion in the area. Overnight at Camp.

Day 7: Tallem to Jakthang (3176m) 4-5 hours walk. Trek from Tallem to Jakthang. This route is a walk in the paradise passing through at least twenty different kinds of Rhododendron varying in colours from white to the deepest red and in height from trees of 6m to scrubs of not more than a foot. Lunch at Camp.

Day 8: Jakthang to Yabuk (3978m) 4- 5 hours walk. The path to Yabuk climbs through the forest and after about three hours of steady walking you reach the snout of the Zemu glacier. Lunch at Camp.

Day 9: Yabuk to Rest Camp (4570m) 5 Hours Walk. The path from Yabuk to Rest Camp follows the Zemu Glacier; the path is mainly over boulders. As the trail opens into the valley the great peaks come into view. The Rest Camp is situated just opposite Mt Siniolchu which is one of the most beautiful and graceful peaks in Sikkim.

Day 10: Rest Camp to Green Lake (5050m) 4-5 Hours walk.The trail from Rest Camp gently climbs up the valley. On a clear day this is one of the most beautiful walks in the Himalaya. Mt Siniolchu, Simvo, Twin Peaks, Nepal Peak and The Khangchendzonga are some of the giants that dominate the horizon. The Camp at Green Lake Plain.

Day 11: Rest Day for sight seeing at Green Lake. Spend the day lazing in the sun watching the panoramic view of the Great Mountains of Sikkim. Climb for about an hour or so to the hill behind the Green Lake one will come to a high point where you will get the grandest view of the Mt Khangchendzonga divide and the distant Mt Chomolhari in Bhutan.