Cosmic rays reveal corridor hidden in Egypt’s Great Pyramid of Giza

Cairo — A team of archaeologists and other scientists in Egypt has used advanced technology that relies on beams of radiation from space to get a clear view of a 9-meter-long corridor in the Great Pyramid of Giza, which remains hidden behind a grand entrance to the old structure. The announcement Thursday was a result of the “ScanPyramids” project, launched in 2015, which uses cosmic-ray muon radiography to peer inside sealed structures.

Scientists on the ScanPyramids project use cosmic-ray muon radiography equipment to view a corridor hidden in the Great Pyramid of Giza, built some 4,500 years ago for the ancient Egyptian king Khufu, in a photo taken on 2 was provided to CBS News in March 2023. / Credit: Egyptian Ministry of Tourism and Antiquities

In this case, that structure was King Khufu’s pyramid, built more than 4,500 years ago.

The team behind the research, which was published in the journal on Thursday Nature communicationfirst announced the discovery of a long, mysterious open space and a distinct “great void” within the pyramid’s internal structure in 2017but they left Egyptologists guessing as to what exactly they were or what they looked like.

Using the advanced technique, which “detects cosmic rays passing through the pyramid, allowing the authors to determine the size of the corridor because a massive pyramid would allow less radiation to reach the detectors compared to empty space,” they found that the gabled corridor was about 10 meters long and almost 2 meters wide, and they got clear images of it.

An image from the ScanPyramids project shows the inside of a hidden passage about 30 feet long in the Great Pyramid of Giza, built for King Khufu about 4,500 years ago.  The interior of the corridor was revealed using cosmic-ray muon radiography, during an announcement on March 2, 2023 in Giza, Egypt.  / Credit: ScanPyramids/Egyptian Ministry of Tourism and Antiquities

An image from the ScanPyramids project shows the inside of a hidden passage about 30 feet long in the Great Pyramid of Giza, built for King Khufu about 4,500 years ago. The interior of the corridor was revealed using cosmic-ray muon radiography, in an announcement made March 2, 2023 in Giza, Egypt. / Credit: ScanPyramids/Egyptian Ministry of Tourism and Antiquities

But the 150-meter-high pyramid has far from revealed all its mysteries. The new information revealed on Thursday still leaves the door wide open for speculation.

“I believe this is a very important discovery because on the north side of this corridor there is an area that has no limestone, it’s empty,” famous Egyptian archaeologist Dr. Zahi Hawass to CBS News. “I really think there is something important under the corridor, it could be Khufu’s real burial chamber.”

East-West section of the Great Pyramid and front view of the north wall show, a) Underground chamber, b) queen's chamber, c) great gallery, d) king's chamber, e) descending corridor, f) ascending corridor, g) al-Ma'mun- corridor, h) north side Chevron area, i) ScanPyramids Big Void.  / Credit: ScanPyramids/Egyptian Ministry of Tourism and Antiquities

East-west sectional view of the Great Pyramid and front view of the north wall show, a) Underground Chamber, b) Queen’s Chamber, c) Grand Gallery, d) King’s Chamber, e) Descending Corridor, f) Ascending Corridor, g) al-Ma’mun corridor, h) north side Chevron area, i) ScanPyramids Big Void. / Credit: ScanPyramids/Egyptian Ministry of Tourism and Antiquities

However, the head of Egypt’s Supreme Council of Antiquities, Mostafa Waziri, told CBS News it remained unclear what the purpose of the empty corridor might be, or what might be discovered at the other end, deep inside the pyramid.

He said the hallway was most likely created to ease the structural load on the pyramid, but “we’re not sure yet what’s underneath. Are there more hallways? Will there be rooms? It must have a function, but we don’t know .” yet and we cannot predict.”

A general view during the press conference in front of the pyramid of King Khufu on March 2, 2023 in Giza, Egypt.  / Credits: Fadel Dawod/Getty

A general view during the press conference in front of the pyramid of King Khufu on March 2, 2023 in Giza, Egypt. / Credits: Fadel Dawod/Getty

Waziri said the researchers would continue to work and they also hoped to uncover some of the treasures likely buried with King Khufu, a fourth-dynasty pharaoh of ancient Egypt’s “Old Kingdom” period.

Struggling with skyrocketing inflation, the Egyptian government probably hoped that the discoveries and the publicity surrounding them would boost the revival of the country’s tourism industry, which has taken a huge blow from the corona pandemic and the Ukraine war.

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