A theory of mine about how they placed each block and built the pyramids is that they maybe used some sort of magnetic device to move and position the blocks of granite ontop of eachother. As I do not know that well of minerals, stones and whatnot I was not sure if granite could be magnetic, but as I looked around on the internet I found out this:
Granite can be slightly magnetic. If you bring rare earth magnet towards it, the magnet attracts. Especially if it is mined from India.
Oxides of iron and titanium are responsible for this.
This small theory of mine formed after I had seen episode 1,2 or 3 of AA Season 1.
Idiot theory: If this is not true, I'll just say that the russians are an older civilization that hid in underground caves and they were the ones who built the pyramids because... They came up with Tetris!

