Have scientists discovered vast structures underneath the Pyramids of Giza in Egypt? This is a claim that has been circulating in the news recently, but is it true? There is a lot of misinformation and confusion regarding this claim. Let’s examine the facts.
According to the claim, a team of Italian scientists recently discovered eight massive cylinders extending down into the ground below the Pyramid of Khafre (the middle of the three famous Pyramids of Giza). These are like massive columns, but they are hollow.
These eight hollow columns, or cylinders, supposedly have what appear to be coils or perhaps passages around them. The purpose of these columns and the coils or passages coiling around them is unknown.
The eight columns are organised into two parallel rows of four. According to the scientists, they extend down 648 meters into the ground. They are standing on top of two enormous artificial blocks next to each other, each 80 meters by 80 meters.
However, this is not all. Even further below these structures, various other non-descript structures have supposedly been found as far down as 2000 meters! These appear to be the remains of a vast city extending throughout the entire Giza plateau.
Archaeologists have discovered huge, spiral-shaped cylindrical structures stretching over 600 meters (about 2,000 feet) straight down beneath the Great Pyramid of Giza. These massive findings, located more than 2 kilometers (1.2 miles) below the pyramid’s base, hint at enormous… pic.twitter.com/p0TEbKxKg2
— Historic Vids (@historyinmemes) March 20, 2025
To understand how much, if any, of this claim is actually true, we need to understand where it comes from. Some commentators have claimed that it comes from a paper released in 2022 by the Khafre Project which has only recently resurfaced. However, this is not true.
It is true that the paper in question was released by the same team of scientists who are now making these claims about the structures below the pyramids. However, that paper was a scan of the Great Pyramid of Giza, not the Pyramid of Khafre, and it only scanned the pyramid itself.
The claim about the massive structures below the Pyramid of Khafre actually comes from a press conference which was held by the Khafre Project in March. A document dated to March 16 presents the claims explained in the conference. This is where these new claims come from.
The researchers behind this claim are Corrado Malanga and Filipo Biondi. To put their assertions into perspective, Corrado Malanga has written numerous books making claims about past interactions between humans and aliens on earth.
The technique used by these researchers to examine the Pyramid of Khafre is Synthetic Aperture Radar, or SAR. As explained by Nasa:
“Synthetic aperture radar (SAR) is a type of active data collection where an instrument sends out a pulse of energy and then records the amount of that energy reflected back after it interacts with Earth.”
The technique is fundamentally based on the principle that different types of material will reflect the pulse of energy in slightly different ways. The science is real, but is the way that Malanga and Biondi used this technique legitimate?
As already noted, their claim is that they have discovered columns extending down 648 meters below the Pyramid of Khafre. Furthermore, they claim to have found structures as far down as 2000 meters. In contrast, other sources give SAR a penetrating depth of only a few meters.
For example, a study in 2022 into the use of SAR in desert areas found the following:
“The average signal penetration depths over the paleochannels, sandy plains, and rocks and man-made features are 2.84 m, 1.97 m, 1.21 m, respectively.”
As we can see, the way in which respected, peer-reviewed papers use SAR is profoundly different from the way in which Malanga and Biondi have attempted to use it. The idea of using this technique to see many meters under the ground is implausible. The idea of using SAR to see many dozens, hundreds, and even thousands of meters below the ground is absolutely out of the question.
One likely explanation for the discrepancy between scientists’ use of SAR and Malanga and Biondi’s use of it is the fact that the software used to interpret the signals was developed by Biondi himself. It was not the same software generally used by scientists when working with SAR.
This, obviously, raises questions about the legitimacy of the findings. Furthermore, the actual results obtained from the use of SAR are extremely vague and difficult to interpret, even if SAR could penetrate that deeply into the ground.
Finally, it is absolutely vital to point out that the full paper discussed in the press conference has yet to be released. It has certainly not been peer reviewed. This means that experts in the field have not yet had the opportunity to examine the claims.
At the moment, the basis for this new claim about the pyramids is profoundly weak. The fundamental basis for it is SAR. Yet, the researchers used SAR completely unlike other scientists. The idea that it can see so deeply into the earth has no basis.
Not only did they use their own software to process the results, but there has been no peer review. Legitimate evidence for this claim, therefore, is completely lacking.
