The sub-Saharan landscape of Niger is characterized by deserts, sand dunes, uplands and hills, as both the Sahel and Saraha Deserts dominate the region.
In the lower part of the country 2% of the land is covered with forests and woodlands.
The third longest river in Africa, the Niger River, runs in a crescent from the Guinea Highlands through Mali, and makes up part of the Benin-Niger border. It is Niger's lowest point at 656 ft (200 m).
In northern Niger, the Air Mountains punctuate the Sahara desert with a series of nine massifs. The highest point of the country, Mont Idoukal-n-Taghes at 6,633 ft (2,022 m), is located in the south central region of the Air Mountains.