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.It is considered sacred by Buddhists, Sikhs and Hindus. The lake is named after Guru Padmasambhava—also known as Guru Rinpoche—founder of Tibetan Buddhism, who visited in the 8th century.