Laruma River
Kogin Laruma hakikar mashigar ruwa ce a Bougainville a cikin tsibiran Solomon na Tekun Fasifik.  Laruma yana bakin gabar yamma na tsibirin a gefen farar kasan tudun Keriaka, Laruma ya ratsa cikin lambatun Sulemanu. Bakin kogin yana arewacin ƙauyen Laruma (yawan jama'a 141 a 1972  ) da kudancin Turupei.  Kogin Laruma yana nuna iyaka tsakanin yaren Bannoni - masu magana da harshen kudu da harshen Pivu - masu magana da mutanen arewa.  A cikin 2001, kwarin Laruma yana da yawan jama'a 14 a kowace km2.

Nassoshi