What is the Great Rift Valley?
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Similar large-scale earth movements (see plate tectonics ) are also believed responsible for the formation of the Great Rift Valley of E Africa, which is the continent's most spectacular land feature. From c.40 to c.60 mi (60-100 km) wide, it extends in Africa c.1,800 mi (2,900 km), from the northern end of the Jordan Rift Valley in SW Asia to near the mouth of the Zambezi River; the eastern branch of the rift valley is occupied in sections by Lakes Nyasa and Turkana, and the western branch, curving N from Lake Nyasa, is occupied by Lakes Tanganyika, Kivu, Edward, and Albert. The lava flows of the recent and subrecent epochs in the Ethiopian Highlands, and volcanoes farther south, are associated with the rift; among the principal volcanoes are Kilimanjaro, Kenya, Nyamulagira, Elgon, Meru, and the Virunga range with Mt. Karisimbi and Nyiragongo.
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