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| | Great Rift Valley |
 | | Volcanic valley formed 1020 million years ago owing to rifting (major subsidence through faulting) of part of the Earth's crust, and running about 8,000 km/5,000 mi from the Jordan Valley through the Red Sea to central Mozambique in southeast Africa. |
 | | For most of its length the Rift Valley has a width of some 60 km/35 mi and, in highland areas especially, is bounded by inward-facing escarpments with a height which often reaches 5001,000 m/1,5003,000 ft. It is marked by a series of lakes, including Lake Turkana, and volcanoes, such as Mount Kilimanjaro. |
 | | The rift system associated with the Rift Valley extends into northern Botswana, with geological faults controlling the location of the Okavango Delta. |
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