The tsingy were made by water. Millions of years ago, this part of Madagascar was under the sea, and the seabed slowly built up into a thick layer of limestone. After the sea level dropped, rainwater dripped through the rock for millions of years, slowly carving the stone into a maze of points and ridges.
From the air, the tsingy look like a giant grey forest made of rock. From the ground, it looks more like a million stone knives all pointing at the sky. Some of the spires are so close together that explorers have to use ropes and ladders to get from one to the next, walking across them on wooden bridges.
Even though the rock is hostile to people, lots of wildlife lives here. Special lemurs called sifakas leap from one stone spike to the next without slipping. Bats sleep in the caves underneath. Plants find tiny cracks of soil and grow upwards, sometimes finding the only puddles of water for kilometres.
The most famous tsingy in Madagascar is at a place called Bemaraha. It is now a UNESCO World Heritage Site, which means the whole world has agreed to look after it. It is one of the most unusual landscapes anywhere on Earth.