I wonder how long the Egyptian pyramids would last. | Hacker News

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		jlawson on Sept 27, 2020 \| parent \| context \| favorite \| on: Would it be possible to detect an industrial civil... I wonder how long the Egyptian pyramids would last.

lumost on Sept 27, 2020 [–]

As the pyramids are constructed of limestone, they would desolve during the next wet phase of the sahara ( previous wet period ~20kya and 12.5 kya ).

https://en.wikipedia.org/wiki/Sahara_pump_theory

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