Mananatanana
Mananatanana kogi ne a yankin Haute Matsiatra,yana gabashin Madagascar.nfoboxYana gudana cikin kogin Mangoky.

Yana da maɓuɓɓugar ruwa a cikin Andringitra Massif .Mangoky. Tare da Matsiatra yana samar da Kogin Mangoky.

Nassoshi