Gurudongmar Lake Buddhist Flag flutters in GuruDongmar Lake.JPG Buddhist Holy Lake -Gurudongmar Lake Location North Sikkim, India Coordinates 28.02°N 88.71°ECoordinates: 28.02°N 88.71°E Basin countries Sikkim, India Surface area 118 hectares 290 acres Shore length1 5.34 kilometres 3.32 mi Surface elevation 17,004 ft 5,183 m Settlements Mangan, North Sikkim 122 km. Lachen, North Sikkim 67 km. 1 Shore length is not a well-defined measure. Gurudongmar in May. Gurudongmar Lake in Sikkim. Gurudongmar Lake is one of the highest lakes in the world and in India, located at an altitude of 17,800 ft 5,430 m in the Indian state of Sikkim.