Nabta Playa: The World’s First Astronomical Site Was Built in Africa and Is Older Than Stonehenge | Discover Magazine

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This 7,000-year-old stone circle tracked the summer solstice and the arrival of the annual monsoon season. It’s the oldest known astronomical site on Earth.

Source: Nabta Playa: The World’s First Astronomical Site Was Built in Africa and Is Older Than Stonehenge | Discover Magazine