Lachen is one of the top 15 coldest places in India as well as Lachen in located at North Sikkim district in the Sikkim state, India. Lachen is located at an elevation of the 2,750 metres or the meaning of the Lachen is big pass. Nepali, Lepcha, Tamang, Bhutia, Limbu, Newari, Mangar, Rai, Sherpa Sunwar and Gurung languages are there in the Lachen.