Perte des Rivières
Three rivers flow into a huge sinkhole here and disappear underground, marking the entrance to Ankarana's underground river system.
Perte des Rivières is a giant sinkhole in the eastern section of Ankarana. During the rainy season, three rivers flow down from the plateau and pour straight into the deep pit, disappearing into the limestone to become underground streams before emerging on the other side of the plateau. The pit walls are steep and surrounded by stone forest and deciduous woodland, making the view from the lookout point spectacular. In the dry season the water flow is reduced, but you can still see the huge shape of the dissolved pit clearly. The site lies on the route from the east gate to Lac Vert, a few kilometres from the gate, and is usually combined with the suspension bridge and the Bat Cave for a day trip. A park guide is required.
Opening hours
Approx. 07:00–16:00 (park guide required)
Nearby sights
- Petit Tsingy
- Bat Cave (Grotte des Chauves-souris)
- Tsingy Rary & Ankarana Suspension Bridge
- Lac Vert
- Andrafiabe Caves & Western Grand Tsingy