You might be wondering: how can we be so sure about 2560 BCE? Did someone write it down? Actually, yes! We found ancient graffiti inside the Great Pyramid from the workers who built it. They wrote gang names like "Friends of Khufu" on the stones.
Chronology of Construction and Pyramid Building Evolution
Plus, modern science uses carbon dating on bits of wood and charcoal left behind. When you combine that with records of star alignments and ancient kings’ lists, the timeline gets pretty solid. It’s like a giant puzzle, and we’ve got most of the edge pieces in place.
The Weird Truth About Time
Here’s the mind-bender. The pyramids were constructed so long ago that they were already ancient history for the ancient Greeks. When Alexander the Great marched into Egypt in 332 BCE, the pyramids were already more than 2,200 years old.
For context, the Pyramids are older than paper. No, really—paper was invented in China around 200 BCE. These stone giants stood there for millennia before humans figured out how to write on something that wasn't a rock or a piece of leather.
