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.  

                         
                                                                                                                                               Religious Significance:

The lake is revered by the local people. It is believed that Guru Nanak rested on the banks of this lake on his way to Tibet. Guru Nanak's footprints, a robe and a water-carrying utensil are preserved in a nearby place called Lachen Gompha. The locals refer to Guru Nanak as Rimpoche Nanak Guru.