 The park is divided into three zones.The first, Malio ranges from to the summit of Pic d' Andohahela at , and has dense rainforest with more than two hundred species of tree ferns, orchids, wild vanilla, lemurs and many birds.The second, Ihazofotsy-Mangatsiaka, contains dry spiny forest with rare birds and reptiles in altitudes ranging from to at the summit of Pic de Vohidagoro.