Green Lake is one of the least explored areas of Northern Sikkim. Kanchenjunga was one of the first peaks to be attempted by expeditions before world war two through this route. Pre war Everest expeditions also passed through North Sikkim and this trail was part of their route. This pictorial trek offers spectacular views of mount Kanchendzonga – 3rd highest peak of the world , Siniolchu – considered to be the most beautiful peak of Sikkim , Tent Peak followed by many other high peaks . The trek to the Green Lake requires walking through sludge and slimy paths – but the reward is just stunning. The trekking route along the left bank of Zemu River passes through the dense habitats of Silver fir forests, alpine scrubs and meadows. There are vast tracts of thick forest, with several varieties of colorful flowers, birds and waterfalls on both sides of the trail. Flowers like rhododendrons, blue poppies are in full bloom especially in the months of September -November which is the best time for this trek.