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Exploring Pyramid Secrets: Joe Rogan and Filippo Biondi #JRE2443

This Joe Rogan Experience episode #2443 with Filippo Biondi is my favorite in recent times, hands down. From the first few minutes, Biondi’s Italian accent wraps these wild pyramid claims in a kind of calm, precise musicality that makes you lean in instead of roll your eyes. Joe, to his credit, does exactly what a good host should do here: he asks the obvious skeptical questions, keeps the conversation flowing, and repeatedly reminds listeners that all of this hinges on one big “if.” When he clearly qualifies the discussion with “if this tomography technique holds up,” he does the responsible thing—and that’s why this is one of the rare episodes where I don’t think a traditional fact check is even necessary. Still, because this is one of my favorite topics, I can’t not write about it.

Episode synopsis
In #2443, Joe Rogan sits down with Filippo Biondi, a PhD engineer and signal‑processing researcher who helped develop and apply a radar‑based tomography method—often referred to as HarmonicSAR or SAR Doppler tomography—to the Great Pyramid of Giza. Using satellite radar and ultra‑subtle vibrations, Biondi claims his team has mapped out hidden structures inside and below the pyramids, including immense underground columns, huge chambers, and deep shafts.
Throughout the episode, they move from very technical discussions of micro‑Doppler signals and “phononic” data all the way to wild speculations about psychedelic initiation chambers and the pyramids as some kind of resonant, consciousness‑altering machine. Joe keeps circling back to two things: how real the imaging is and how much of this is still hypothesis, which is where his “if this tomography technique holds up” framing comes in. The conversation walks a tightrope between hard engineering, cutting‑edge non‑destructive testing, and full‑on “tinfoil hat” scenarios—and that tension is exactly why it’s so compelling.


How HarmonicSAR works
Let’s strip HarmonicSAR down.
• Imagine the pyramid and the ground under it are a giant stone musical instrument, like a huge drum.
• The Earth is always shaking a tiny bit—cars, wind, distant earthquakes—so this big “stone drum” is constantly vibrating, but so softly we can’t feel it.
• Satellites in space send radar “flashes” down to the pyramid and watch how the surface wiggles from those tiny vibrations over time.
Now the technique
• Different hidden shapes inside—rooms, tunnels, columns—make the “drum” vibrate in different ways, just like putting your hand on a guitar string changes the sound.
• By measuring super‑small changes in the radar signal (called micro‑Doppler shifts) again and again from different angles, Biondi’s algorithms turn those wiggles into a 3D “X‑ray‑like” picture—a kind of tomography—of what’s inside and underneath.
• In his words, the pyramid and subsoil become “transparent” when you look at them in this vibration‑based, harmonic radar view.
So, like an ultrasound for a baby but using radar from space and the Earth’s natural rumble instead of a wand and a gel, HarmonicSAR tries to “listen” to the structure’s music and turn it into images. It’s an extension of established synthetic aperture radar and non‑destructive testing ideas, but pushing them into a very ambitious, high‑resolution, deep‑imaging regime.


What we already know about new pyramid discoveries
Before we ask what’s new and how far Biondi is going, it’s important to anchor this in what mainstream, peer‑reviewed work has already shown.
Projects like ScanPyramids have, over the past decade, used muon tomography (cosmic‑ray imaging), infrared thermography, ground‑penetrating radar, ultrasound, and electrical resistivity to reveal previously unknown voids and corridors in the Great Pyramid. A particularly important feature is the so‑called North Face Corridor , a hidden void behind the north face discovered by muon imaging and then confirmed in detail by combined GPR, ultrasound, and resistivity tomography in a 2025 Nature‑family paper.
These studies show that:
• There is at least one previously unknown corridor or chamber above the main entrance area on the north face.
• Multimodal non‑destructive imaging can cross‑validate such features and refine their geometry without drilling or damaging the pyramid.
• The method is cautious: it maps voids and densities, but it does not jump to big claims about function or meaning beyond what the data directly support.
Separately, wider work on the Giza plateau has suggested additional voids and possible alternative access routes using advanced radar and other geophysical techniques, and ScanPyramids has continued to announce new void‑like structures in Giza pyramids and nearby monuments. All of this has moved the “there’s nothing left to find” narrative firmly into the “actually, there’s more going on in there” camp—but with careful, incremental claims.


What Biondi claims on top of that
Biondi’s work overlaps with and then leaps beyond these established discoveries.
On the overlap side, his HarmonicSAR analyses report features that align with the ScanPyramids North Face Corridor and other hidden voids, and he has publicly thanked the ScanPyramids team for validating parts of his tomographic imaging. He argues that his radar‑based tomography not only confirms certain corridors but also shows their continuation and connection to known elements like the Grand Gallery.
Then he adds some big, still‑controversial layers:
• Massive underground columns: He describes what appear to be underground “columns” beneath the pyramid plateau with diameters on the order of tens of meters.
• Huge subterranean chambers: He mentions chambers roughly comparable to a football field—tens of meters in each dimension—far below the current ground level.
• Deep shafts: He talks about shafts descending on the order of hundreds of meters (around 600 m) down, based on his Doppler tomography readings and simulations.
• Possible “psychedelic initiation” function: In the episode he and Joe speculate that certain stone “sarcophagi” could have been used for intense altered‑state experiences powered by acoustic or vibrational effects of the entire structure.
Right now, these more extreme claims—especially the very deep shafts and “Disneyland for psychedelics” interpretation—are not part of the mainstream peer‑reviewed archaeological literature. That doesn’t automatically make them wrong, but it does put them in the “interesting, needs independent confirmation” category. The fact that Joe explicitly frames them as conditional on the technique holding up is exactly the right instinct.

Who is Corrado Malanga and why is he credited?
One fascinating detail is that HarmonicSAR work, including that related to Giza, credits an individual named Corrado Malanga. Malanga is a chemist by training: he was born in La Spezia in 1951 and worked for decades as a researcher and lecturer in organic chemistry at the University of Pisa, publishing over 60 scientific articles in international journals on topics like heterocyclic compounds and new synthetic methods.
Outside conventional chemistry, Malanga is widely known in Italy for highly unconventional research and narratives about UFOs, alien abductions, consciousness, and esoteric interpretations of reality, often through groups like the Italian Stargate networks. His later work moves far from mainstream science into territory that many academics view as fringe or pseudoscientific, blending metaphysics, alleged alien contact, and multidimensional consciousness models. Biondi’s acknowledgment effectively links HarmonicSAR’s development history to someone with both a solid early scientific career and a very controversial later body of work.
That doesn’t automatically invalidate the math or the signal processing, but it is context audiences should know: the intellectual ecosystem around these ideas includes both rigorous engineering and strongly speculative esoteric frameworks. Again, this is why Rogan’s careful “if this holds up” qualifier matters so much; it keeps the episode grounded while still giving space for jaw‑dropping possibilities.

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