The pyramids are massive structures ... The earliest pyramid was the Step Pyramid of king Djoser of the Old Kingdom's 3rd Dynasty over 4,600 years ago, which was relatively small ... It had a low tomb upon which extra levels were gradually added to give it a step-like appearance .. Later on, the great ones were built ... How did they, such a long time ago, even transport those enormous stones in the first place, forget building the entire pyramid.??. scientists of today have tried to replicate them, and failed to create even a relatively small one .... Either they were far more advanced than us or some alien technology and help was present ... what do you think ... ?