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Discovery

The Surprising Truth Behind the Construction of the Great Pyramids

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Photo of a man in front of one of the pyramids

Professor Michel Barsoum stands before one of the Egyptian pyramids for which he has found evidence suggesting some of the stone blocks were cast, not quarried.

Credit: Michel Barsoum, Drexel University

 

Close up photo of blocks with an arrow pointing to a cavity.

An egg-shaped cavity marked by the arrow spans two massive blocks on the north side of Senefru's Bent Pyramid must have been formed when the blocks were cast around a small rock or debris that was present.

Credit: Michel Barsoum, Drexel University

 

Photo of the top of the pyramid

The top of the Khafra pyramid shows an intact outer casing near the apex and a band of regular stone just below.

Credit: Michel Barsoum, Drexel University

 

image from scanning electron microscope

This colorized scanning electron microscope image shows the pyramid's "innercasing" limestone, including amorphous silica (red) that cements the limestone aggregates (black) together.

Credit: Michel Barsoum, Drexel University