Stock Photo - The scientists Ali Gueney (L-R), Uwe Dorka, Antonio Ansalone and Angelo Mammone let down the ton-heavy stone blocks in the true to the original 1-1 replica of a chamber of the Great Pyramid of Giza in Kassel, Germany, 09 Febuary 2018. Engineering scientists of the University of Kassel demonstrate the closing mechanism of a burial chamber. Photo: Swen Pförtner/dpa. - Kassel/Hessen/Germany

Stock Photo: The scientists Ali Gueney (L-R), Uwe Dorka, Antonio Ansalone and Angelo Mammone let down the ton-heavy stone blocks in the true to the original 1-1 replica of a.

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