The Great Pyramid of Giza is hiding a secret chamber as big as a PLANE, scientists discover

SCIENTISTS have found a hidden chamber in Egypt's Great Pyramid of Giza in the most major discovery mad in the ancient structure since the 19th century.
In an article published in the journal Nature today, an international team of researchers revealed the existence of 30-metre void located deep within the pyramid and situated above its Grand Gallery.
The purpose of the chamber is unclear a nd it does not appear to be connected to any other tunnels, leaving experts scratching their heads about why is it there.
Scientists made the discovery using "cosmic-ray imaging", which involves recording the behaviour of subatomic particles called muons which are produced when cosmic rays smash into the Earth's atmosphere.
A similar technique was used to find hidden tunnels inside the Bent Pyramid, which was given its name due to the wonky shape of its structure.
Built under the watch of the Pharaoh Khufu and completed in around 2550 BC, the Great Pyramid is also known as Khufu's Pyramid and was the world's tallest man-made construction for thousands of years.
It is the sole survivor of the ancient Seven Wonders of the World and debate about how it was built has lasted millennia - with no clear answer in sight.
"This is a premier," said Mehdi Tayoubi, a co-founder of the ScanPyramids project and president of the Heritage Innovation Preservation Institute.
"It could be composed of one or several structures... maybe it could be another Grand Gallery. It could be a chamber, it could be a lot of things.
"It was hidden, I think, since the construction of the pyramid."
The pyramids at Giza have captivated visitors since they were built as royal burial chambers 2,500 years ago.
Relatively minor discoveries generate great interest because experts are still divided over how they were constructed.
Late last year, for example, thermal scanning identified a major anomaly in the Great Pyramid: three adjacent stones at its base which registered higher temperatures than others.
Speculation that King Tutankhamun's tomb contains additional antechambers stoked interest in recent years, before scans by ground-penetrating radar and other tools came up empty, raising doubts about the claim.
The muon scan is accomplished by planting special plates inside and around the pyramid to collect data on the particles, which rain down from the earth's atmosphere.
They pass through empty spaces but can be absorbed or deflected by harder surfaces, allowing scientists to study their trajectories and discern what is stone and what is not. Several plates were used to triangulate the void discovered in the Great Pyramid.
Tayoubi said the team plans to work with others to come up with hypotheses about the area.
"The good news is that the void is there, and it's very big," he said.
A “cursed” tomb containing the bodies of the workers who built the Great Pyramid of Giza has just reopened to the public for the first time in nearly 30 years.
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Archaeologists in Egypt have restored the 4,500-year-old tomb which is located in a “tribal mountain” area near the pyramid.
The finding opens up the possibility that the void could be linked to other different and undiscovered structures within the Pyramid, the study claimed.
Crucially, the authors said, it could provide a method by which scientists can finally start to piece together how the pyramid was built.
They added that the development "show how modern particle physics can shed new light on the world's archaeological heritage".
Muon detectors have previously been used to map out the inside of the Fukushima's nuclear reactor in Japan and it is hoped they can be used to explore other archaeological sites.
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