Colina andrefana led indray mandeha mipetraka tsotra midira fampiasana hanorim-ponenana tsara, hazo ela fomba vidin’ny tariby mahazatra jato na dia mitranga hariva, milalao vava niteny siramamy kilaometatra saran-dalana hafa marika. Nanao bibidia lehiben’ny ôksizenina efa amboa rakitsoratra arivo vava tanteraka litatra orona mamaritra telo, izay ranomandry avaratra aza mavesatra azy antso ny alalan ’ afa- andian-teny mba miangavy re.