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STORY LINE AND FORMATION OF AFRICA WITH THIER CULTURES

With a mean elevation of approximately 650 m (2,100 ft) above sea level, Africa is high compared to other continents. The southern and eastern section of the continent, often called High Africa, consists primarily of a high plateau with elevations between 1,000 and 2,000 m (3,000 and 7,000 ft) above sea level. Northern and western Africa, widely known as Low Africa, has much lower mean elevations. Most of the continent’s surface has been warped into a series of large, saucer-like basins separated by highlands. The major basins of Africa are El Djouf, now occupied by the Niger River Basin in West Africa; the Chad Basin, surrounding Lake Chad in west central Africa; the Sudan (or Nile River) Basin in northeast Africa; the Congo River Basin of Central Africa; and the Kalahari (or Okavango) Basin of southern Africa.a.   Africa’s other major mountainous regions occur at the northern and southern fringes of the continent. The Atlas Mountains, a system of high ranges, extend for 2,200 km (1,400 mi) across Morocco, Algeria, and Tunisia, roughly parallel to the northern coast. These ranges enclose a number of broad inland basins and plateaus. In the west, the High (or Grand) Atlas contains Toubkal (4,165 m/ 13,665 ft), the highest peak of the system. Toward the east, the Atlas consists of two parallel ranges: the Tell Atlas to the north and the Saharan Atlas to the south. The Drakensberg Mountains in eastern South Africa form part of the Great Escarpment, a ridge that divides the central plateau regions of southern Africa from the lowland regions on the coast.

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