The ancient Egyptians may have used an elaborate hydraulic system to construct the world's first pyramid, a controversial new study claims.
Known as the Pyramid of Djoser, the six-tiered, four-sided step pyramid was built around 4,700 years ago on the Saqqara plateau, an archaeological site in northern Egypt, according to research posted to ResearchGate on July 24. The research has not yet been published in a peer-reviewed journal.
