Osimiri Rianila
Rianila bụ osimiri dị na mpaghara Atsinana na egwuregwu egwuregwu Madagascar .  Ọ na-esi n'ugwu dị n'etiti agbadata ka ọ banye n'Oké ọkụ India na nrida Brickaville na Andevoranto .  eserese ya kacha bụ Rongaronga, nke hel ya na nso Brickaville yana ire Iaroka na Vohitra .

Ndị nyocha ọdịda anyanwụ na-akpọbu osimiri ahụ Iharoka River (na Osimiri Jark na ebe ole na ole).

Ntụaka 

 (in French) canaldespangalanes.over-blog.com - Descente de la Rianila