[2] Before the bifurcation, East Kameng district occupied an area of 4,134 square kilometres (1,596 sq mi),[3] comparatively equivalent to Alaska's Unimak Island.The district's administrative divisions are Chayangtajo, Sawa, Khenewa, Bameng, Lada, Gyawe Purang, Pipu, Seppa, and Richukhrong.[12] East Kameng is inhabited by various tribes of similar origin but with distinct cultures and beliefs, practising the Donyi-Polo religion.With the coming of modernism, festivals such as the Sarok of the Aka, Nyokum of the Nishi, Jonglam-Ponklam and Chindang of the Miji and the Gumkum-Gumpa are celebrated in full flair in Seppa.Religion in East Kameng District (2011) The Nishi is a Tibeto-Burman language spoken by approximately 800–1200 people in the East Kameng district who live among the Aka (Hruso), but their language is distantly related, with distinct words for basic vocabulary.[18] Koro was recognized as a separate language in 2010 by a linguistic team of David Harrison, Gregory Anderson, and Ganesh Murmu while documenting two Hruso languages (Aka and Miji) as part of National Geographic's "Enduring Voices" project.