Scientists who claimed to have found 'vast underground city' beneath Egyptian pyramid share major new discovery

A group of scientists who claim they found a 'vast underground city' lying beneath Ancient Egyptian pyramids have come up with another 'new discovery' they reckon they've found.

Last time around, Italian researchers Corrado Malanga, Filippo Biondi, and Armando Mei claimed they'd used 'radar pulses' and detected 'vertical cylinders' about 2,000ft below the Khafre Pyramid.

That particular landmark forms part of the Giza Pyramid Complex which includes the Great Pyramid of Giza, the largest pyramid ever built by Ancient Egypt.

The researchers claimed that these 'vertical cylinders' contained chambers, pipes and a water system which converged into cube-shaped structures which they argued was evidence of a 'true underground city'.

They also claimed that this supposed underground city might contain 'the fabled Hall of Records', which would hold documents that shed new light on Ancient Egyptian society as well as the 'lost continent of Atlantis'.

The researchers first made the highly contested claim that they'd found something beneath the Khafre Pyramid (HASAN MROUE/AFP via Getty Images)

Now, The Daily Mail reports that these guys have come up with another claim and this new discovery is a second hidden underground city.

They claimed that they found similar shafts beneath the Menkaure Pyramid, also part of the Giza Pyramid Complex, and reckon there's a '90 percent probability' that they're just like the ones underneath the neighbouring Khafre Pyramid.

According to their research, which has not been peer reviewed or published in a scientific journal, a second underground structure is built beneath this other pyramid.

However, the researchers have attracted significant criticism for their claims from many, with leading Egyptologist Dr Zahi Hawass calling these supposed discoveries 'bulls**t' and 'fake news'.

Now they claim they've found something else under the Menkaure Pyramid (Mohamed Elshahed/Anadolu via Getty Images)

Not holding back after the first claims of an underground city, Dr Hawass said 'all this information is completely wrong and has absolutely no scientific basis'.

Radar expert Professor Lawrence Conyers of the University of Denver said the equipment the Italian team were using wouldn't be able to penetrate the ground in the way they claimed, so they wouldn't be able to map out these structures many feet below the pyramids.

He said it was possible that there might be something underneath the pyramids from before they were built, but that it'd be a 'huge exaggeration' to make such claims as the researchers have about their discovery.

Theoretical physicist Sabine Hossenfelder has also taken aim at the researchers and their claims, arguing that they have 'randomly identified some structures in their tomography images and ignored others'.

She rated it a 'nine out of 10 on my bulls**t meter'.