The Great Pyramid has hidden a secret for thousands of years—a massive underground cave discovered just beneath its base. Radar scans first hinted at something strange below the ancient stones, but no one could confirm it.
Researchers using muon tomography, a technique that tracks cosmic particles to map dense structures, identified an anomaly beneath the Great Pyramid of Giza during the Scan Pyramids mission. Initial teams suspected an equipment error, but subsequent scans from Nagoya University and France’s CEA confirmed the finding: a vertical cavity beneath the monument, extending more than 30 feet into a chambe…