That's Who Really Built the Pyramids but How Is a Mystery

Ancient pyramids have always baffled scientists. There were definitely no construction cranes, electric hammers or excavators. So how did people back then manage to build something as monumental as the pyramids? Let's take a look at the possible process of construction and pay attention to the upper part of the structure. What is it for? Learn more about your ad choices. Visit megaphone.fm/adchoices