East Siang district, located in the state of Arunachal Pradesh is administered from the district headquarters located at Pasighat. It is majorly populated by the Adi tribe which includes a large number of Aboriginal groups and subgroups such as the Shimongs, Ashings, Karkos, Pangis, Milangs, Pasis, Minyongs, Padams, Tangmas and Boris. The Adis are related to the Astro- Mongoloid race, and are good looking, strong and dynamic.
The territory was divided from West Siang district and the East Siang district was created in 1989. After a decade, the district was further partitioned to make Upper Siang district in 1999. The district got its name from the River Siang which originates from Tibet, where it is called Tsangpo. It passes through the entire area and descents down into the plains of Assam and becomes the mighty Brahmaputra. It is famous around the world as one of the best white water rafting expeditions and attracts a regular flow of adrenalin seekers.