Hydraulic mechanics may have indeed been the driving force behind the construction of ancient Egyptian pyramids. In a recently published study in PLOS ONE, scientists concluded that the Step Pyramid of Djoser in Saqqara, Egypt?"believed to be the oldest of the seven monumental pyramids and potentially constructed about 4,500 years ago?"offers a remarkable blueprint for hydraulic engineering. The hydraulic-powered mechanism could have maneuvered the oversized stone blocks forming the pyramid, starting from the ground up. The research team says the Step Pyramid's internal architecture is consistent with a hydraulic elevation mechanism, something that's never been reported before at that place or in that time.