Dry streambeds in Africa are commonly referred to as "wadis." A wadi is a valley, ravine, or channel that is dry except in the rainy season, and it is a term used in various regions in the Middle East and North Africa. In different parts of Africa, they may also be called "donga" (in Southern Africa) or "vlei" (in some contexts in Southern Africa), though "wadi" is the most widely recognized term for such features in arid and semi-arid regions.
What are dry streambeds called in Africa?
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