Gurudongmar Lake or Gurudogmar Lake is one of the highest lakes in the world, located at an altitude of 17,100 ft (5,210 m). It lies in the province of North Sikkim, India, only some 5 kilometres (3.1 mi) south of Chinese border. This fresh-water lake[1] is located northeast of the Kangchenjunga range in a high plateau area connected with the Tibetan Plateau. Gurudongmar lake provides one of the source streams of the Teesta River.[2] The source of Teesta, the Tso Lhamo Lake, lies some 5 km (3.1 mi) to the east. The lake remains completely frozen in the winter months from November to Mid-May. The China-Indian border is still a delicate place due to it's close proximity of China-India -border. Due to the extremely inhospitable terrain and the difficulties associated with reaching the place, the lake sees only a handful of visitors each year. Access is strictly controlled at the Army checkpost at Giagong. The lake is named after Padmasambhava, the Indian tantric Buddhist who conducted rituals here. It is said that this is why, even at the height of winter, one portion of the lake never freezes. Guru Nanak, also known as Nanak Lama, founder of Sikhism religion, visited many of the places where Padmasambhava prayed at, including this lake in North Sikkim.