The Tsingy extend over 15,000 hectares, and are immense cathedrals of limestone formed over 200 million years of erosion of the fossils and shells that were laid down by the sea and then further shaped by the rain. Madagascar's original inhabitants, the Vazimba, used them as shelters. Nowadays it is a place for worship and ceremonies. They are the emblems of the island and it is impossible to visit Madagascar without going to see them.
This area is very difficult to access and very isolated from the world. A local guide is indispensable. But the forest of stone that you are going to see is really worth the effort! The holes, spikes and crevasses of the Tsingy alternate with the primary forest. You can even abseil down some of the Tsingy! Some extraordinary scenery...
On the other side of the town, in the gorges carved by the the Manambolo river, are the tombs of the Vazimba people. If you are fit, you can go rafting on the water!