Filippo Biondi

So, having the history of the vibration of the surface of the Earth, we can perform the so-called tomographic inversion and so to scan what there is underneath.

Okay, and how accurate are the images based on the surface vibrations?

Yes, it is normal that the images that we are able to retrieve by reprocessing these vibrations are not so accurate with respect to

images that we can have with a precise camera or something like that.

They are approximated.

We know this.

But they are sufficiently accurate to retrieve important features that are located inside the map.

Okay, so the images that you got of the pyramid itself that showed the big void, you were scanning the surface of the pyramid itself for certain... Those are acoustic images.

Acoustic images, scanning the vibrations of the pyramid itself and that showed the... What there is inside.

What's inside.

Yeah.

Okay.

Okay, fascinating.

Yes.

So talk to me about how the sound, how that works and how sound is able to penetrate through the ground level.

You're saying that so the planes that are flying at 60... 600 kilometers.

Yeah, 400 miles up in the air and they're taking these photographs.

Those are not sound.

Yes, I tell you.

I have to explain you better this.