Ancient Egyptians had none of our technology, but managed to complete the megalith almost unnaturally fast.
"Landreau et al. estimate that Egyptian builders could have captured between 4 million and 54 cubic meters of water over the two or three decades it took to complete the Step Pyramid." "Landreau et al ...
Color illustrations, including front cover. Hidden ramps may solve the mystery of the Great Pyramid's construction. https://siris-libraries.si.edu/ipac20/ipac.jsp ...
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