Kabi Lungtsok is a historic site north of Gangtok where a treaty of blood-brotherhood was signed between the Lepcha chief Thekong Tek and the Bhutia chief Khye Bum Sar in the 13th century.
The location is marked by a group of stone pillars. Ritual prayers are held every year to commemorate and reconfirm the historic treaty. The event usually takes place in June, photos were taken in 2013.