The Rio Omerê Indigenous Territory is a reserve for isolated indigenous peoples in Rondônia, Brazil. The territory consists of 26,000 hectares of forest on the Omerê River[1] and is home to the Kanoê and Akuntsu tribes. Both tribes were the victims of severe massacres by cattle ranchers in the 1970s and 1980s.[2][3] As of 2011[update], the Akuntsu number just five individuals and the Rio Omerê Kanoê four.[1][2] The two tribes are separate peoples speaking mutually unintelligible languages, but are linked by marriage.[1] The reserve is also home to an unknown man who lives alone and is thought to be the last survivor of a different tribe.[4][5] Several loggers and cattle ranchers also remain in the territory despite attempts to eject them and continue to pose a threat to its indigenous inhabitants.[6]