Radar scans suggest that a vast, ancient underground city lies beneath the Giza Pyramids

• Researchers using advanced satellite radar (SAR) claim to have detected a massive, ancient underground structure beneath the Giza plateau, featuring enormous spiraling pillars, massive cubic chambers and a network of shafts and corridors extending thousands of feet deep.
• The findings challenge mainstream Egyptology, suggesting the pyramids are not tombs but merely surface components of a far larger complex. The lead researcher, Filippo Biondi, dates this underground network to 18,000-20,000 years old, linking it to the mythic “Zep Tepi” era and a lost civilization.
• The claims rely on a proprietary technique that interprets surface vibrations to model subsurface features, not by penetrating the ground. While the researchers assert consistency across multiple satellite systems, mainstream experts like Dr. Zahi Hawass vehemently dispute the technology’s capability to scan to such depths.
• To validate the radar data, Biondi has proposed a $20 million project to Egyptian authorities to clear debris from known shafts and deploy robotic drones for exploration, emphasizing a desire for non-invasive investigation.
• The findings currently exist in a state of scientific limbo, unconfirmed by direct physical evidence but presented as robust, repeatable data. The researchers welcome independent verification, arguing that the potential scale of the discovery warrants serious investigation.

A team of researchers using advanced satellite radar technology has announced the detection of what they describe as a colossal and ancient underground megastructure beneath the Giza plateau, a claim that, if verified, could dramatically alter our understanding of the site’s history and purpose.

The findings, presented by Italian scientist Filippo Biondi on the Joe Rogan Experience podcast and detailed in a recent press release, are based on synthetic aperture radar (SAR) data. Biondi, who developed proprietary software initially for “top secret projects for the Italian military,” analyzed over 200 scans from multiple satellites, including Italy’s Cosmo-SkyMed and the U.S.-based Capella Space.

The data reportedly reveals a stunning subsurface geometry: enormous, spiraling pillars approximately 65 feet in diameter plunging nearly 4,000 feet below the surface. These pillars appear to terminate in massive cubic chambers, each roughly 260 feet in length and width, situated beneath the three main pyramids and the Great Sphinx. The scans also indicate a network of shafts descending about 2,000 feet, intersecting with horizontal corridors estimated to be around nine to ten feet tall.

“They’re not tombs,” Rogan stated, echoing the radical interpretation proposed by the data. He suggested the iconic structures above ground may be “just the tip of the iceberg.” The implications are profoundly controversial. Biondi dates the underground complex to between 18,000 and 20,000 years ago, linking it to Zep Tepi, or the mythic “First Time” of Egyptian legend.

As noted by BrightU.AI‘s Enoch, “Zep Tepi,” meaning “First Time,” was the mythical golden age in ancient Egyptian belief when the gods directly ruled the earth, establishing perfect order, harmony and the foundations of civilization. It was an idyllic, primordial epoch that served as the sacred model for all pharaohs to restore and maintain.

Biondi cites salt residues from ancient seawater as potential evidence of a great flood event that could have submerged the structures, pointing to a lost civilization far predating the accepted 4,500-year age of the pyramids.

The stunning images remain in a scientific limbo for now

The credibility of the technology is the central point of debate. Biondi emphasized that his method does not involve penetrating the ground with radar. “We are not penetrating anything,” he said. “We are just grabbing the entropy that is on the surface of the earth.” His technique detects and interprets minute, millimeter-scale vibrations to reconstruct subsurface features through tomographic inversion.

He noted the team’s initial skepticism, holding the results for six months. “My opinion was that it was not real. I was thinking that maybe it was noise or some artifacts due to our processing procedures,” Biondi admitted. Confidence grew only after consistent results were obtained across different satellite systems and validated against known benchmarks, such as the precise mapping of Italy’s underground Gran Sasso particle physics laboratory. “Once we had the same results while we were using American satellites and also other satellites always the same results, we decided to disclose,” he said.

The claims have met fierce resistance from mainstream Egyptologists. Renowned archaeologist Dr. Zahi Hawass dismissed the scans outright, telling the Daily Mail, “any scientist who understands tomographic radar knows it only reaches about 60 feet. Their theory is completely wrong.”

Undeterred, Biondi has proposed a physical investigation to Egyptian authorities, focusing not on new excavation but on clearing debris from known, blocked shafts to deploy robotic drones. He estimates such a project would cost roughly $20 million. “We want to use machines, not humans,” he said.

Biondi welcomes independent verification, stating that he doesn’t mind if others can replicate things. He also said that he would be happy for other research groups if they could replicate the things that he has discovered.

For now, the stunning images remain in a scientific limbo as they are unverified by direct exploration but supported by what the researchers insist is robust, repeatable data. As Rogan argued, the potential scale of the discovery demands attention, adding that if others are skeptical, it makes sense to keep exploring. Otherwise, continued exploration would prove that the claims are wrong, with Rogan adding that “it’s a crime not to investigate.”

The Giza Plateau, long thought to have yielded most of its secrets, now holds the promise, or the phantom, of a hidden world that could rewrite ancient history.

Watch this video about ancient boats found in the pyramids of Egypt.

This video is from High Hopes channel on Brighteon.com.

Sources include:

DailyMail.co.uk 1

DailyMail.co.uk 2

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