Engineers found evidence of hydraulics in an ancient pyramid, solving a 4,500-year-old mystery

See how Egyptian engineers might have used water to shape history’s greatest monuments.
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Researchers may have found a secret entrance in the pyramids of giza

Fresh scans of the Pyramid of Menkaure on the Giza Plateau have revealed hidden internal voids that may line up with an unknown passageway, raising the possibility that a long-concealed entrance is ...