There’s a hidden “void” inside the Great Pyramid of Giza, “a space 100 feet long, similar to the Statue of Liberty from her heel to her head.”
A team of researchers got a picture of it, employing a technique from the field of particle physics. Standing in the Queen’s chamber, they sent a beam of muons—heavier siblings of electrons that can penetrate rocks—through the pyramid.
As muons pass through matter, they lose energy and decay. So, if they were enfeebled, it’d mean that they’d passed through solid matter; if they stayed strong, it’d suggest that they’d traveled through empty space or less dense material.
When the data was analyzed, it revealed an unexpected excess of muons, indicating the latter. But it’s not known if the cavern they detected is a chamber, a tunnel, or an enormous gallery, but its steep incline makes it unlikely that it was a room of some sort.