The Three Pyramids of Giza, world-famous archaeological marvels. However, it is said there was a fourth pyramid, which was even more impressive. The tomb of the pharaoh Djedefre. So what is the story behind this mysterious pharaoh and his eternal tomb? And why has his pyramid disappeared? Egyptologist Chris Naunton sets out to find the enigmatic structure and unravel the mystery of the pharaoh who built it. Djedefre is an Ancient Egyptian king belonging to the Fourth Dynasty. He is a son and heir to the throne of Cheops. Cheops built the Great Pyramid of Giza, one of the Seven Wonders of the Ancient World. There is no fourth pyramid on the plateau of Giza. But not far away, around 10 km to the north in Abu Rawash, archaeologists discover a pyramid frustum.