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Home » Joe Rogan Podcast: #2443 with Filippo Biondi (Transcript)

Joe Rogan Podcast: #2443 with Filippo Biondi (Transcript)

Read the full transcript of signal-processing researcher Filippo Biondi’s interview: “The Giza Underground: Radar Discoveries Beneath Egypt’s Pyramids” on The Joe Rogan Experience, January 23, 2026.    

Brief Notes: Engineer and signal-processing researcher Filippo Biondi joins Joe Rogan to explain the radar imaging work that claims to reveal gigantic man-made structures buried deep beneath Egypt’s Giza pyramids. Using satellite‑based synthetic aperture radar and Doppler tomography, his team reports vertical tube‑like “columns,” spiral features, and vast underground chambers that appear to interconnect all three pyramids and the Sphinx.

The conversation walks through how this technology works, why multiple satellite constellations are returning matching signals, and what that could mean if the data really is mapping an enormous subterranean complex. They also explore why many Egyptologists fiercely reject these claims, and how confirming them on the ground could force a radical rethink of ancient history and human technological capability.

Introduction and Background

JOE ROGAN: How are you, sir?

FILIPPO BIONDI: Fine, thank you.

JOE ROGAN: Thank you very much for being here. I’m really excited to talk to you. Obviously there’s been an amazing amount of interest and controversy because of your work. We should explain to everybody right off the bat what this is about.

You are the man that was at the head of this research that is looking at structures that are underneath the bottom of the pyramid and incredibly controversial. Very fascinating. And if it’s accurate, it essentially rewrites all of human history.

FILIPPO BIONDI: Yes. Thank you for this invitation. And yes, the group is composed by Corrado Malanga, which is the head of the group and dean professor of chemistry at the University of Pisa.

JOE ROGAN: Could you explain your background please, so people understand?

FILIPPO BIONDI: Yes, my background is this. I am a telecommunication engineer. I graduated at the university.

JOE ROGAN: What is that word again? Say it again.

FILIPPO BIONDI: Telecommunication engineering.

JOE ROGAN: Telecommunications engineer.

FILIPPO BIONDI: Okay.

JOE ROGAN: Your English is excellent, but the Italian accent, although fabulous, sometimes it’s difficult to translate.

FILIPPO BIONDI: Thank you very much, Joe. I’m sorry, yes, that I’m not a mother tongue of English.

JOE ROGAN: It’s still much better than my Italian.

Academic Credentials

FILIPPO BIONDI: Okay, thank you. Yes, I graduated myself at the University of Lecce, south of Italy. Very nice university. And it has the name of a famous Italian mathematician, which is Ennio de Giorgi.

Ennio de Giorgi was living in the era when John Nash was living also. And they were one against the other and they were both studying the 19th Hilbert problem. And Ennio De Giorgi solved this problem one week before John Nash.

JOE ROGAN: Ah, interesting. John Nash, from the famous movie “A Beautiful Mind” with Russell Crowe.

FILIPPO BIONDI: Yes.

JOE ROGAN: Yeah.

FILIPPO BIONDI: So then I performed my PhD at La Sapienza in Rome and now I’m here.

The Discovery Process

JOE ROGAN: And how did you get involved in this discovery?

FILIPPO BIONDI: Yes, I worked on radar and synthetic radar for a lot of time for the Italian military. Some work, yes.

JOE ROGAN: Which you can’t really talk about.

FILIPPO BIONDI: No. Right. And I was involved in some research where together with the Italian Research Council of Bari, always south of Italy, we were testing some special processing that were able to perform something special. And so this is…

JOE ROGAN: So this top secret research that you worked on for the Italian government led you to try this stuff out, try this technology out. And this is satellite-based technology, correct?

FILIPPO BIONDI: Yes.

JOE ROGAN: And it’s radio tomography.

How the Technology Works

FILIPPO BIONDI: Yes, it is something, in my personal opinion, very simple. The radar is installed on board on the satellite. The satellite flies in space at a distance of 600 kilometers at 7 kilometers per second in velocity.

So while it flies along the orbit, it is able to catch snapshots of the earth. The snapshots have to be focused. And this focusing procedure in the azimuth direction is done by the processing of sound because it is involved in the so-called Doppler frequency.

You know, Joe, when you hear noises that are approaching you, this noise will rise the frequency because the target has a velocity, a positive velocity with respect to you. And so the frequency is raised up.

And this procedure allows us to estimate or to grab the vibration information that is always present at the surface of the earth in terms of evanescent waves that are present on the surface of the Earth. So this vibration, which is mechanical vibration, carries inside of this the information that is located underground. And so we did this.

JOE ROGAN: And was it a specific idea specifically to look under the pyramids or was it something that was discovered accidentally?

FILIPPO BIONDI: Okay, yes. Once we discovered this method, it was a coincidence that I knew Corrado Malanga. And at that time we are in 2018, he was studying the pyramids.

And so we were talking about whether there were some methods able to scan inside the pyramids, because he needed some information to conclude the research that he was doing. And so I proposed to him to use my technique and we started to work together and so we focused at that time on the pyramids.

JOE ROGAN: And when was this? When were the first scans?

FILIPPO BIONDI: Yes, in 2019.

Initial Findings

JOE ROGAN: In 2019. And when you got the data back, did you immediately get the data that you’re showing today where you see the columns with the coils around it?

FILIPPO BIONDI: Okay, let’s say that this research can be divided by two. The first one, 1.0, we were concentrating research on the Khufu pyramid, the Cheops pyramid, to watch inside the pyramid.

And so we detailed, tailored our processing to watch wholly inside the pyramid.