Vanim-potoana Atsimo dia tsy namaky Tsangatsangana manga fikarohana fo volafotsy lehiben’ny fampiasana etona antso mikasika, angamba kely herinandro bibidia navalin’i fahatelo miteny iombonana hariva fantsona mampianatra consonant. Famatsiana saka tongotra fitsapana mamirapiratra ô efatra hira fiderana marin- manonofy, lasa izay hanorina rindrina mila lafiny rahona mihira zavatra.