[chopperman]

I was wondering if we know for a fact that the pyramids to be completely constructed of blocks or if instead they are just shells filled with sand?

[SunkenCiv]

I subscribe to the view of Davidovits (another French researcher) that the inner blocks were not quarried, but poured concrete (not the kind we make today). His view is IMHO a necessity; it is also compatible with internal ramps, and all other hypotheses (other than the “Giza Power Plant” nonsense) and models of the construction — but the reverse is not true, the other hypotheses can’t work without Davidovits and his geopolymerization.