Here’s what you’ll learn when you read this story: A study suggests that the first of seven key pyramids in Egypt, the Step Pyramid of Djoser, was built using a hydraulic lift. Dated to about 4,500 ...

Map of the Saqqara plateau showing the water course from the Gisr el-Mudir dam to the water treatment facility near Djoser pyramid. The water is then transferred to the pyramid's network of pipes to ...