> the pyramids were power plants that used that type of energy. I've heard of this. It had to do with the structures mathematical design. Something about it being a resonant structure, and contained a great deal of potential energy. I've heard, but never looked into the claim, that they in part used the structure of the pyramids as a means to heat the structure from within and laid black casting stones on the outside in order to cure the geo-polymer they poured quickly enough. Pretty wild stuff.