Hidden corridor in Egypt’s Great Pyramid mapped with cosmic rays

A beforehand hidden corridor buried deep in the 4500-year-old Great Pyramid of Giza in Egypt has been mapped in element for the primary time – and researchers have additionally taken a glimpse inside utilizing an endoscopic digicam.

The corridor was first found in 2016, however researchers didn’t wish to harm the monument to realize entry. The pyramid is the one one of many seven wonders of the traditional world nonetheless standing, and was, for millennia, the world’s tallest human-made construction at 146 metres. It was constructed round 2560 BC through the reign of the pharaoh Khufu.

Using a method referred to as cosmic-ray muon radiography developed by teachers at Nagoya University, Japan, a world crew of researchers was capable of affirm that the corridor was 9 metres lengthy, with a cross part of about 2 metres by 2 metres.

Cosmic-ray muon radiography tracks the extent of muons passing by way of the pyramid. These particles are a pure type of radiation ensuing from cosmic rays and are consistently bombarding Earth’s floor. In the approach, researchers use muon detectors positioned at numerous factors across the monument. Muons are partially absorbed by the stone used to construct the pyramids, which implies the strategy permits researchers to establish cavities contained in the construction.

This method has been used to map the inner buildings of pyramids since 1971, when it was first used at Giza.

Using their exact map of the corridor, the researchers recognized a chance. “We realised that it was so close to the surface that an endoscopy was possible,” says Sébastien Procureur on the University of Paris-Saclay in France.

They inserted a small digicam just like these used in medical procedures to get the primary glimpse of the corridor in hundreds of years.

“We knew the cavity was there, but of course it’s totally different when you see it,” says Procureur. “We felt strange when we saw this.”

Still, Procureur was glad of 1 factor. “It’s a controversial opinion, but I’m relieved the cavity was empty. I wouldn’t have liked to participate in opening a tomb.”