A Massive Void Has Been Sealed Inside The Great Pyramid Of Giza For 4500 Years. What's Inside? - IFLScience

"Like X-rays, which can penetrate the body and allow bone imaging, these elementary particles can keep a quasi-linear trajectory while going through hundreds of metres of stone before decaying or being absorbed," the team explains in their study, published in Nature.

Kate Spence, archaeologist at the University of Cambridge, told National Geographic that the void could be a result of how the pyramid was constructed, an internal ramp used to move roof blocks into position, which was then left or filled loosely with rubble.

When the pyramids were first opened and explored, 19th-century archaeologists found a number of chambers, including one containing a sarcophagus that was thought to contain Khufu himself.

In 2004, two amateur French Egyptologists, who used ground-penetrating radar and architectural analysis to back up their claims, came up with a theory that there was an extra chamber.

Gilles Dormion, the architect of the pair, suggested that the pyramid was adjusted as the builders realized certain chambers would not take the weight of the burial sarcophagus.

Giant granite beams are present in the king's chamber, with large cracks in them that have been attributed to earthquakes since the pyramid was built.