One of the most beautiful, pristine lakes in Sikkim, Gurudongmar lake sits in close proximity to the Tibetan and Chinese border in the north. Nested amidst the mountains at 5,183 meters, the freezing alpine lake is amongst the major sources of the river Teesta. The lake takes its name after the eminent guru Padmasambhava, who is believed to have traversed this region during his visit to Tibet.