Andrej Ciesielski, an 18-year-old from Munich, scaled the Great Pyramid of Giza (also known as the Pyramid of Khufu or the Pyramid of Cheops) on a visit to Cairo earlier this year. It is illegal ...

Figure 1: Muon detectors installed for Khufu’s Pyramid. Three techniques of cosmic-ray muon imaging were applied to investigate the inner structure of the pyramid. The known voids (the King’s ...

The pyramid is thought to have been built as a tomb for the pharaoh Khufu, and is the last of the seven wonders of the ancient world still standing. It contains three main chambers: the Queen’s ...