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Science and Space
Main Health and Human Body Earth Space Prehistoric World A-Z

Lake Natron, Tanzania

An airplane casts a shadow over the red waters of Lake Natron in Tanzania, part of the East African Rift Valley. The water's red hue is due to algae that live on salts spewed from nearby volcanoes. The East African Rift Valley system begins in northern Syria and extends across East Africa into Mozambique.

Photograph by George Steinmetz