Expert reveals 'truth' behind 'underground city' discovered beneath Egypt's pyramids

An expert has lifted the lid on the so-called 'underground city' discovered beneath Egypt's pyramids.

Egypt's pyramids attract thousands of tourists every single day, as the world stands in awe at the architectural magnificence of the structures built some 4,500 years ago, between 2700 to 1500 BCE.

However, they're also the subject of some intense conspiracy theories - from a hoax to alien involvement.

The researchers say there could be an underground city beneath the pyramids (Getty Images)

The mystery only deepened when Italian researchers claimed to have discovered a 'vast underground city' from giant vertical shafts some 4,000 feet below the surface of the Pyramids of Giza, with 'spiral staircases' and a platform comprised of two huge chambers with descending channels from them.

If true, the secret 'city' would be 10 times larger than the actual pyramids themselves.

Then, during a news briefing on Saturday, the scientists said a water system was located some 2,100 feet below the Khafre Pyramid, that joins the three pyramids of the Giza complex, with yet more underground paths diving into the Earth.

However, while the bombshell discovery has been shrugged off by some experts as being 'false' and 'exaggerated,' and is yet to be peer-reviewed by independent researchers, the team say they are going to use radar pulses to create high-resolution images to prove their theory.

Corrado Malanga from University of Pisa, Italy, said in a statement: "When we magnify the images [in the future], we will reveal that beneath it lies what can only be described as a true underground city," reports The Daily Mail.

The team have been looking at the Pyramids of Giza for their research (Getty Images)

The team explained they send radar signals from two satellites, about 420 miles above Earth, to analyze how the signals bounced back into sound waves to 'see' through the solid stone.

They also suggest the pyramid may be home to 'undiscovered secrets, notably the fabled Hall of Records'.

The Hall of Records is a concept linked to ancient Egyptian legend, where hidden chambers beneath giant structures including the Great Pyramid or the Sphinx contain a treasure trove of information and knowledge about the ancient civilization.

Professor Lawrence Conyers, a radar expert at the University of Denver whose work focuses on archaeology, told the news outlet that the technology is limited, and would not be able to go that far below the surface.

He said the suggestion of a vast underground city would be a 'huge exaggeration'.

However, he did say that small structures like shafts and chambers could exist after all, perhaps being there before the pyramids were built given that the site was 'special to ancient people.'

The three pyramids, Khufu, Khafre and Mankaure, sit on the west bank of the Nile River in northern Egypt, with the team suggesting the vertical shafts under the Khafre sit at about 33 to 39 feet in diameter, at 2,130 feet - possibly supporting the pyramid on top.

Malanga said: "We did calculations and saw that the Khafre Pyramid is incredibly heavy, and to hold it up, it needs a solid foundation. Otherwise, it will sink."

Nicole Ciccolo, the project's spokesperson, also said the cylinder structures might have been 'access points to this underground system'.

Se added: "The existence of vast chambers beneath the earth's surface, comparable in size to the pyramids themselves, have a remarkably strong correlation between the legendary Halls of Amenti."