Beneath the Pyramids

Filippo Biondi is an Italian telecommunications engineer who spent years working on classified radar systems for the Italian military. In 2018, he turned that expertise toward the Giza pyramids and found something that, if verified, fundamentally rewrites human history.

Using satellite-based synthetic aperture radar tomography, his team detected what appear to be massive underground structures beneath the pyramid complex. We’re talking 20-meter-diameter columns arranged in precise geometric patterns, connected by 3-meter-high corridors, extending deep beneath the surface.

The pyramids, according to Biondi, may be the tip of an iceberg.

The Technology

Synthetic Aperture Radar (SAR) tomography isn’t new or experimental. Satellites orbiting 600 kilometers above Earth at 7 km/second send radar signals that penetrate the ground and return data that can be processed into 3D tomographic images.

Biondi’s team validated their methodology rigorously before applying it to Giza. They successfully imaged the Gran Sasso Laboratory, a particle physics facility buried 1.4 kilometers inside an Italian mountain, and got the shape and dimensions right. They imaged the Hoover Dam and correctly identified internal turbines and machinery. Then they pointed it at the Great Pyramid and accurately detected all known internal structures: the Grand Gallery, King’s Chamber, Queen’s Chamber, and the multi-layer “Zed.”

The known structures matched. The unknown ones started appearing.

The Skepticism Phase

When the first images of the underground columns showed up, Biondi’s reaction wasn’t excitement. It was skepticism.

His team sat on the results for six months, convinced they were looking at noise or processing artifacts. They ran more scans. Same results. They switched from the Italian Cosmo-SkyMed satellite system to American Capella Space satellites. Same results. Over 200 scans using multiple satellite systems, all showing the same thing.

For a full year, only two people on Earth knew about this data. Biondi describes walking around during that period “like I have the biggest secret on earth.”

They only disclosed after peer-reviewed publication and after exhausting every explanation that didn’t involve actual underground structures.

What the Scans Show

The columns are massive: approximately 20 meters in diameter each. They appear to have spiral or coil structures wrapped around them, visible in tomographic cross-sections as descending helical patterns. They’re uniformly spaced in precise geometric arrangements extending beneath the Khafre (Cafra) Pyramid.

Connecting these vertical structures are horizontal corridors, roughly 3 meters tall. This isn’t just a discovery of buried objects; it’s the detection of what appears to be a navigable underground network.

Perhaps most significant: there appear to be vertical shafts on the surface that could serve as entry points. Currently filled with sand and debris, Biondi believes these could be cleared without drilling or damaging existing structures.

The Implications

Here’s what makes this more than a curiosity for ancient history buffs.

If these structures exist as the data suggests, they display a level of engineering precision that challenges everything we attribute to ancient Egypt. Biondi describes flat, precise walls with no inscriptions. The uniformity of the column spacing suggests deliberate, sophisticated engineering.

This aligns with a pattern that researchers like Graham Hancock have pointed out for decades: the older you go at Giza, the more complex the structures are. The newer constructions are demonstrably inferior to the older ones. That’s the opposite of what you’d expect from linear technological progression.

As Rogan put it during the conversation: “The older you go, the more complex the structures are, and the newer ones are kind of shitty.”

Biondi connects this to Hancock’s framing: “We are a species with amnesia.” We don’t know who we are. We don’t know our origins. And the most answers, according to Biondi, can be found studying the pyramids.

The Acoustic Theory

One of the more fascinating threads in the conversation involves the purpose of these structures. Biondi believes they were designed to work with sound and vibration.

All the internal pyramid structures appear to function acoustically. The chambers echo and resonate in specific ways. The “Zed” is described as a “perfect device made by stones.” The underground structures, with their columnar and spiral arrangements, suggest systems designed to generate or maintain specific frequencies.

Rogan brought up Christopher Dunn’s work on the “Giza Power Plant” theory, showing a precision-machined vase carved from incredibly hard stone with accuracy to “a thousandth of a human hair.” It has handles, meaning it couldn’t have been turned on a lathe. It was made during a period when we supposedly had no metal alloys capable of working such material.

How? With what technology? These questions multiply the deeper you look.

The Path Forward

The excavation proposal is ready. Biondi’s team has contacts in Egypt prepared to submit when funding is secured. The estimated cost: approximately $20 million.

The method wouldn’t require drilling new holes. The existing shafts could be cleared and explored using drones and robots before sending humans down. Tourism could continue at the site while work proceeds in isolated areas.

Rogan suggested approaching wealthy individuals like Bezos or Musk. Biondi acknowledged he doesn’t have those connections. The project, he emphasized, is “for humanity” rather than personal gain.

The Resistance

Significant resistance has come from corners of the internet and from those with established academic positions in Egyptology. Critics question methodology without engaging with the peer-reviewed publications. Some dismiss the findings as “fringe” despite the scientific rigor behind them.

Interestingly, Biondi reports not finding significant resistance from Egyptian authorities themselves.

The mainstream archaeological position maintains the ~4,500-year-old timeline for pyramid construction. Anything that challenges that timeline challenges careers, publications, and institutional reputations. That’s the real source of resistance.

Why This Matters

If this is true, if physical excavation confirms what the radar scans show, we’re not just adding a footnote to Egyptian archaeology.

We’re dealing with evidence of an advanced civilization that predates our current understanding of human technological capability. Structures of this scale and precision, built underground, connected by corridors, aligned with mathematical and astronomical constants, aren’t the product of copper tools and human labor alone.

Hancock was right in the 1990s when he started asking these questions. As time goes on, he’s being proven more and more correct. Things just keep getting older.

For one year, two people walked around with this data, questioning everything they thought they knew. Now the rest of us get to do the same.

Watch the full conversation on Joe Rogan Experience #2443. For more on the research, visit harmonicsar.com.