What if the pyramids hid an underground city? This is in any case what two Italian scientists advance, Corrado Malaga and Filippo Biondi. The two researchers claim to have spotted 38,000 years old structures under the pyramid of Khéphren in Giza, Egypt. According to them, eight wells surrounded by spiral paths would lead to two 90 -meter cubic structures, surmounted by five other structures linked together by passages. The researchers – the work has sometimes been criticized for its lack of rigor – assume that these structures are linked to a legendary city or to a potential former energy center, explains National Geographic magazine on its site.
Rumors of hidden structures under the Giza plateau do not date from yesterday. From the Greek historian Herodotus to the American medium Edgar Cayce, many have relayed the idea of secret rooms of buried archives, mixing legends, fantasies and pseudo-sciences. This time, the authors were able to count on their status as researchers and the use of a technology presented as unprecedented to make history viral. However, by digging a little, you quickly see the lack of scientific validation on the part of their peers, and the passive of one of the authors, rather focused on extraterrestrial theories.
To achieve this conclusion, scientists have used reconstructions generated by artificial intelligence. Nevertheless, this theory of giant structures under the pyramid does not convince everyone. “”These affirmations were received by an audience prepared for such news due to old claims concerning mysterious and hidden chambers under the pyramid, declares the archaeologist Dr Flint Dibble. And they seemed legitimate due to the confusion between research evaluated by peers and the diplomas held by researchers.»»
A Groundbreaking Discovery at the Pyramids of Giza has Stunned the Scientific and Archaeological World …
In 2022, Researchers Corrado Malanga (University of Pisa) and Filippo Biondi (University of Strathclyde) use Synthetic Aperture Radar (SAR) Technology to a hidden… pic.twitter.com/cpofa0yv6o– Dr. MF Khan (@dr_thehistories) March 27, 2025
Another reserve for the study in question: no excavation or analysis had been authorized by the Supreme Council of Egyptian Antiquities. For Dr. Zahi Hawass, Egyptian archaeologist, these affirmations are “Based”. Same story for Professor Lawrence B. Conyers, expert in ground penetration (RPS) at the University of Denver, which describes the discovery of “Great exaggeration” In the British newspaper The Daily Mail.
Attractive theory, but a wobbly method
Behind the announcement effect generated by the press conference, it is the very tool used by researchers who poses a problem. Under normal conditions, the opening radar of opening (RSO) cannot exceed two meters deep. So to identify structures at 2,000 meters deep, the authors claim to have developed a new method of interpretation of the RSO boosted at AI … but without external validation. For the time being, their results have not been published in a scientific journal, which even more weakens their credibility.
According to a geological study of 2019, the water table begins just a few tens of meters under the Giza plateau. However, if these structures really existed, they would be well below this layer of groundwater. The surface monuments, like the sphinx, already show signs of erosion because of humidity. Consequently, imagining that constructions can remain intact as long at 2,000 meters deep seems highly improbable, even completely unrealistic.
Modern archeology is based on decades of rigorous studies, including geochemical analysis, seismology or muonic tomography. Over the past two centuries, many archaeological data have been collected on the Giza plateau. Strangely, none of them is mentioned in the study of Italian researchers.
