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Photo: Indrajit Das, CC BY 3.0 via Wikimedia Commons
40 km from Gangtok in East Sikkim on Nathula route – Tsongmo Lake (also called Changu Lake or Tsomgo Lake) is a large lake in the East Sikkim district of India. It is oval-shaped, with a length of about one kilometre and has an average depth of fifteen metres.It is also a home of Brahminy Ducks besides being a stopover for various migratory birds. Etymologically "Tso" means lake and "Mgo" means head, thus literally meaning "source of the lake" in the Bhutia language. Tsongmo lake is declared a sacred lake by the local Buddhist and Hindu population. The lake remains hidden in the rich forest cover. It is believed that the birds do not permit even a single leaf to float on the lake surface. There is a motorable road from Pemayangtse right up to the lake area. It falls in the restricted area and hence an inner line permit is required by Indians to visit this place. Foreign nationals are not permitted to visit this lake without special permission. A little distance from the lake is a beautiful natural three storied cave, the Tseten Tashi Cave is a worth to visit.
Tsomgo Lake, also known as Tsongmo Lake or Changgu Lake, is a glacial lake in Changu in the Gangtok district of the Indian state of Sikkim, some 40 kilometres (25 mi) from the capital Gangtok. Located at an elevation of 3,753 m (12,313 ft), the lake remains frozen during the winter season. The lake surface reflects different colours with change of seasons and is held in great reverence by the local Sikkimese people. Buddhist monks prognosticated after studying the changing colours of the lake.
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