The Pyramid of Djoser, and the city that lies underneath .

This source transcript from "The World History Channel" explores the **construction and significance of the Step Pyramid of Djoser**, the first pyramid ever built in Egypt. It details how **new technologies like laser scanning and photogrammetry** are helping archaeologists understand its complex design, including a vast underground network of tunnels. The video highlights the **innovative building techniques** employed, such as sloping courses, and examines the role of **Pharaoh Djoser and his architect Imhotep** in this architectural revolution. Furthermore, it discusses the **source of the stone** used and the potential **purpose behind this monumental structure**, suggesting it was a national project driven by religious belief and the pharaoh's desire for eternal life and the assertion of power.

The mystery of the underground city beneath the Pyramid of Djoser.