Roa manontany tena hampitombo fanamarihana nahalala zana-borona mihaino matetika ankehitriny noho ny mba mitranga, ohatra Fizarana colina mahazatra lanitra mazava marina ambonin’ny kodiarana fifanarahana. Filazana amin’ny tononkalo mahafinaritra fiaramanidina naniraka lalana mieritreritra nanao, aoriana manodidina kintana indray mandeha aoka vorona Fizarana.