Construction Phases ・ Unit 4 (25,000–14,000 years ago): The deepest layer began as a natural lava hill that was “meticulously sculpted” by humans, creating the foundation of the pyramid.

The Step Pyramid at Saqqara in Egypt is thought to be the first monumental stone building in the world. The massive tomb, built for the Pharaoh Djoser, was also the prototype for all the pyramids t… ...