Ethiopian monuments 1,000 years older than previously thought

Rising as high as 20 feet, ancient stone monoliths in southern Ethiopia are 1,000 years older than scientists previously thought, according to a new study. A research team used advanced radiocarbon dating to determine the often phallic-shaped monoliths, or stelae, at the Sakaro Sodo archeological site in Ethiopia's Gedeo zone were likely created sometime during the first century A.D.

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