The Pyramids of Giza were constructed some 4,500 years ago. And the Great Pyramid of Khufu is the only one of the 7 wonders of the ancient world that exists intact today! How the pyramids were constructed is one of Egypt’s biggest mysteries. But the recent identification of a hidden void in the Great Pyramid of Khufu is hoped to give some insight into the illusive pyramids and how they were built!
