Mountain Ranges in the Sahara Desert, Algeria and Niger23.2N 5.5E
Several mountain ranges are visible in Algeria and Niger, standing out against the yellow sands of the Sahara. From top to bottom they are the Tassili n’Ajjer, the Ahaggar Mountains and the Aïr Mountains.
The Tassili n’Ajjer extends for about 500 km. The range’s highest point is Adrar Afao, at 2158 meters. The range is composed largely of sandstone. Erosion in the area has resulted in nearly 300 natural rock arches being formed, along with many other spectacular landforms.
The Ahaggar Mountains, also known as the Hoggar, are a highland region in central Sahara, or southern Algeria. The region is largely rocky desert with an average altitude of more than 900 metres (2,953 feet) above sea level. The highest peak is at 3,003 meters (Mount Tahat).
Finally, the Aïr Mountains can be seen in the lower right corner. Some of the dark granite peaks and plateaus have a circular shape. These mountains reach heights of more than 6,000 ft (1 830 m) and extend over an area of 84000 km².