Egyptian officials have released videos and images taken inside a hidden internal corridor inside the 4,500-year-old Great Pyramid of Giza.
Located close to the main entrance of the Great Pyramid of Giza – the tallest man-made structure for three thousand years – the newly discovered corridor measures 9 meters (30 feet) long and 2.1 meters (7 feet) wide.
It was first detected by an imaging technique called muons radiography in 2016 by the ScanPyramids Project, according to BBC.
By using non-invasive technology including infrared thermography, 3D simulations and cosmic-ray imaging, the research team detected a difference in density and discovered there was an empty space behind the pyramid’s north face, according to Reuters.
To learn more about the void, the scientists further used radar and ultrasound, before putting a 6mm-thick endoscope through a tiny joint in the stones to collect images.
Egyptian antiquities officials say the corridor, which is unfinished, may have been created to redistribute the pyramid’s weight around the entrance or may lead to another chamber that has not yet been discovered.
“We’re going to continue our scanning so we will see what we can do… to figure out what we can find out beneath it, or just by the end of this corridor,” the head of Egypt’s Supreme Council of Antiquities said, according to BBC.