Ténéré, a vast region within the Sahara. It makes up most of the Republic of Niger and stretches into southeastern Algeria and northwestern Chad, bounded by the Ahaggar and Aïr mountains and the Djado Plateau. Flat, wind-eroded land and sand-filled depressions are the chief landmarks. The Ténéré is extremely arid; most of the scanty rainfall evaporates immediately. There is virtually no vegetation or animal life. Caravan routes cross the Ténéré, connecting oases such as Bilma and Agadem.
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.