Actually, a metal machinist from the Midwest named Christopher Dunn has a fascinating theory that the great pyramids may have actually been 'power plants' of a

Actually, a metal machinist from the Midwest named Christopher Dunn has a fascinating theory that the great pyramids may have actually been 'power plants' of a sort. Giant harmonic resonators that siphon energy off of the earths expansion and contraction caused by orbit of the moon. http://www.amazon.com/Giza-Power-Plant-Technologies-Ancient/dp/1879181509#productDescription_secondary_view_div_1465164160775 http://www.amazon.com/Giza-Power-Plant-Technologies-Ancient/... His writing is a bit dense, and maybe not as smooth as it could be...but his exploration of the possibility is quite impressive.