almost certainly

and yes they are found all over the planet, some have mostly turned into pyramid shaped dirt piles like the ones in Serbia and Bosnia but yes

i think an investigation into the composition of the stones used in them would reveal a lot if held in the light of their properties of capacitance and magnetism

i am also pretty sure that the great pyramids are made of an advanced type of concrete, i've seen some stuff about some odd looking "stone" that has all the signs of having been cast like a concrete block but the physical properties of igneous rock