Lachen is the beginning stage for probably the most intriguing treks in North Sikkim and in addition the passage to the heavenly Guru Dongmar and Tso Lhamu lakes. The region is prohibited for people coming from other countries, however authorization passes can be secured in advance. A couple of hotels are opened here for stay and also Forest Department and a PWD Bungalows. Just around 120 km from Gangtok, Lachen is situated at a height of 8838 ft. Adjacent towns of Rabom, Chaten, Talem, Yakthang, Kalep, Samdong and Thangu structure a bigger piece of Lachen. Foot trails to the nation's most noteworthy mountain top Mt. Khangchendzonga and Mt. Sinolchu are the most wonderful crest start at your doorstep when you are in Lachen. Surprises never come to an end in Lachen, all the valley painted with blossoms amid monsoon, trailed by luminosity of autumn season and snowfall welcoming the town in winter.