L1 users: 85 (1998 NTM).
Sandaun province: Bo, Kaumifi, Kobaru, and Nigyama Umarita villages; East Sepik province: Sandaun province border area, near Right May river. Heart of Western Range.
Kaboru, Nikiyama, Umuruta.
Latin script [Latn].
Area seldom entered by outsiders. Unconfirmed as a separate language. Traditional religion.