Pyramids have been shaped by many cultures of the past. The most prominent pyramids are pyramids in Egypt, where the pyramid is done rather than solid rock formed as a pharaoh's tomb. The first Egyptian pyramid was built in the Old Kingdom Period by Imhotep for King Zoser arkitek (2650 BC).
Pyramids are on average composed of as many as 2 million's stone each stone weighing around 2.5 tons. Is still a mystery, how to make that big pyramid in ancient times. Arranging boulders and heavy, with a neat set up mengkerucut the top, if there is no balance then it could collapse.
It is argued that humans are not yet equal to manusian the present age, the human weight was like a giant, so it can carry these boulders. There is also the opinion of Egypt at the time of 11,000 BC has a great culture but that culture has vanished. And there is also the opinion that the pyramid building no interference with alien space beings. But all of the opinion that no one has been able to prove its accuracy. Still a mystery until now.
