This 432-sq-km park and its large, ancient salt lake hosts some part-time resident flamingos (April to October). Amid the spiny forest, watch also for a large banyan tree full of parrots and ring-tailed lemurs. The park is home to four further lemur species. Verreaux's sifaka are commonly seen during daylight hours, and keep an eye out for sleeping nocturnal species such as the tiny grey-brown mouse lemur, fat-tailed dwarf lemur and white-footed sportive lemur.
The MNP office is located in the town of Efoetse, 3km from Ambola. You can arrange a mandatory guide and itinerary here, and a map of all the current routes is on display. There are several circuits, from 30 minutes (1km) to 3½ hours (7km) in length. A good English-speaking guide is Laurent.