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Lachen is a remote village of North Sikkim. It is located at an elevation of 9500 ft. The name Lachen means "big pass". The village is being promoted as a tourist destination by the Sikkim government. The village forms the base to the Chopta Valley and Gurudongmar Lake.Lachen is about 129 km from Gangtok, and can be reached via a six-hour road journey.