Specifically, this included a hydraulic lift system along with a stepped construction method. Furthermore, below the pyramid, a distinct shaft structure was discovered and is thought to have been used to move heavy stone blocks up using water pressure. No doubt this still would've occurred, but now we know the ancient Egyptians were more engineering savvy for the times. This setup likely directed sediment-free water to feed the hydraulic lift system within the pyramid," explained Dr. Landreau. Why would a water system be needed in those times?