The Parc National Andasibe Mantadia comprises two distinct parks. More accessible and fairly flat for easy walking is the 8-sq-km Parc National Analamazaotra, with its entrance and large information centre on the main road to Andasibe. Some 17km to the north lies the wilder, primary forest of 155-s-km Parc National de Mantadia. This is harder terrain but worth the effort.
Analamazaotra gets the most visitors and tends to fill up from July to October, Madagascar’s tourist high season. Because the park is small, most of it can be covered in short walks, including to two small lakes, Lac Vert (Green Lake) and Lac Rouge (Red Lake). The best time for seeing (and hearing) indris (lemurs) is early in the morning, from 7am to 11am.