Lungchok is a historic site of significance, which is located 17 kilometres (11 mi) north of Gangtok
on the Northern Highway in northeastern Indian state of Sikkim
. The historicity of the site is attributed to the fact that the Lepchas, the ethnic tribals of Sikkim and Bhutias (ethnic Tibetans), the immigrants from Tibet who settled down in Sikkim from the 14th century onwards, ceremonially signed a "Treaty of Blood Brotherhood" with religious fervour. Stone pillars mark the location where the treaty was signed.
The Treaty was signed at Kabi Lungchok by the Tibetan King, Khye Bumsa representing the Bhutias and the Lepcha Chief Thekong Tek. The literal meaning of 'Kabi Lungchok', pronounced ‘Kayu sha bhi Lungchok’, is "stone erected by our blood."Life-size statues of the Lepcha and Bhutia 'blood-brothers' who signed the treaty has been erected here.
The history of Kabi Lungchok and that of Lepchas are closely linked, considered the original ethnic community who came to Sikkim from Tibet to escape from the rivalry between the "Yellow hats" and the "Red hats" sects of Vajrayana Buddhism of Tibet. Many people of the Red hat sect of Tibetans migrated to Sikkim.
The historical site is located in a dense forest area on the North Sikkim Highway near Phodong
. The area abounds in natural scenic beauty of rich forests with varied flora, shimmering streams, waterfalls and also many cultural monuments and historic sites.Sub Tropical mixed Broad-Leaved Hill Forest is the forest type in the area comprising: Alnus nepalensis (Uttis), Macaranga (Malata), Engelhardia spicata (Mahua), Michelia (Champ),Symplocos (Kharane) and Cinnamomum (Sinkoli). There are a number of water falls in the area and one such water fall is known as the 'Seven Sister waterfalls'.
Kabi Lungchok region is also home to several species of birds such as: the Pariahkite, Crested Serpent eagle, shahhen falcon, Rufous-necked Hornbill, Aceros nipalensis, Chestnut-breasted Partridge,Grey-crowned Prinia, Ward’s Trogon. Butterflies and invertebrates such as riverine fish, frogs and toads are also recorded in the region.
Ritual prayers are held every year to commemorate the historic treaty signed here.The Chief Minister of Sikkim has recently announced that this historic place will be developed into a destination for tourism.