Eight faces of the Great Pyramid

The Great Pyramid of Khufu, traditionally thought to have four faces, actually has eight, each slightly curved inward. This concave shape is best seen from above and changes how each face is perceived, making it appear as though there are twice as many surfaces.

Base not perfectly square

A 2015 survey found the base of the pyramid is not perfectly square, with a 14.1-centimeter difference between the west and east sides. This detail highlights the precision of the ancient builders, who achieved near-millimeter accuracy without modern tools.

Aerial view reveals concavity

Aerial photography was essential in identifying the concave faces, as the indentation is nearly invisible from the ground. The effect is most noticeable from above during certain lighting conditions, though this remains unconfirmed by leading Egyptologists.

Hidden corridor discovered

In March 2023, the ScanPyramids mission confirmed a hidden corridor behind the north face, called the North Face Corridor. This space, about 35 cubic meters in volume, was first detected using muography, a technique that uses cosmic particles to image internal structures.

New findings add to pyramid’s secrets

The discovery adds to the ongoing research by the ScanPyramids mission, which previously found a large cavity nicknamed ScanPyramids Big Void. These findings continue to reveal the advanced engineering and precise construction techniques used by ancient Egyptian builders.