Tanezrouft, a large, stony section of the Sahara. It is a flat expanse, stretching from northern Mali to the Ahaggar mountains of Algeria. The Tanezrouft is noted for extreme heat and aridity. The Trans-Saharan Track, a motor route, crosses it.
Sahara, the vast desert of northern Africa, and the world's largest arid region. It occupies much of the broad northern half of Africa and covers some 3,500,000 square miles (9,000,000 km2), an area only slightly less than that of the United States.