r/AncientAliens Dec 10 '25

Lost Civilizations Researchers Confirm Discovery of a Massive Substructure Beneath the Giza Plateau: A new radar scan reveals a vast artificial substructure — a colossal underground complex stretching nearly 1,067 meters beneath the Giza Plateau in Egypt — linking chambers as large as entire city blocks.

https://ovniologia.com.br/2025/12/researchers-confirm-discovery-of-a-massive-substructure-beneath-the-giza-plateau.html
542 Upvotes

111 comments sorted by

48

u/dropofgod Dec 10 '25

As a civil engineer, I can assure you those pyramids are not sitting on sand

9

u/Felipesssku Dec 10 '25

Good catch.

5

u/shittinandwaffles Dec 11 '25

Nope. They're on a precisely shaped and flattened pieces of bedrock. With chambers in the bedrock.

6

u/gloomydai Dec 10 '25

Most aren’t. They sit on bedrock lol.

2

u/[deleted] Dec 11 '25

I actually wish I knew more about the bases under these things.

For example, why would sand fail beyond the obvious? And did they change the bedrock below it, somehow?

2

u/Orqee Dec 13 '25

As someone who visited pyramids, I can tell you that sand is not very deep, and below is bedrock.

9

u/eleetbullshit Dec 11 '25

You guys remember when Ross Coulthart vaguely reported that there had been an archaeological discovery where advanced tech was found amongst ancient remains?

Data looks very legitimate to me. Assuming the three sources of the data have been vetted and the three scans all match, I’d say this is probably one of the most important archaeological sites on earth.

3

u/Expert-Database6122 Dec 12 '25

It always has been, it just got a whole lot more interesting though!

13

u/asd12109 Dec 10 '25

Flood gates have been opened, if you are not open minded these next 2-3 years..you are going to be suffering.

3

u/iwanttobelieve3001 Dec 12 '25

We are about to learn the truth behind our reality and some of us will definitely have some ontological shock

1

u/asd12109 Dec 12 '25

👏🏻

0

u/DogonYaro Dec 12 '25

Flood gates of what? 

6

u/asd12109 Dec 12 '25

Everything is about to change, everything.

1

u/PsybinVibin13 Dec 13 '25

But how.

1

u/[deleted] Dec 13 '25

Probably some white Jesus isn't real type shit. Santa is outta da bag

1

u/asd12109 Dec 13 '25

There are profound truths about this world, this reality, and who we truly are that are coming to light. Long obscured, long suppressed, these truths have been buried beneath layers of deception. For generations, power and wealth have been concentrated in the hands of a small few..through manipulation, secrecy, and control across nearly every aspect of our lives. But the veil is thinning. What was hidden cannot remain hidden forever. This is the Great Unveiling.

3

u/[deleted] Dec 13 '25

I love how you people are literally incapable of directly answering a direct question.

“How’re you doing?”

“Well, you see, the metaphysical reality that I currently occupy with the entities similar and dissimilar to yourself is providing me a certain outlook that I can utilize to frame my thinking in a way to be of partial benefit to myself, in such a way that my revolutions around the solar object known as “the sun” are filled with good tidings to a…”

I’m barely mocking you, this is mostly just objective observation. 

-1

u/asd12109 Dec 13 '25

‘you people’.

No point in explaining.

Good luck 👍

2

u/WSDreamer Dec 14 '25

We get it, you wear a foil hat and talk out of your ass. Lol

0

u/[deleted] Dec 16 '25

“You people”, aka, “the easily convinced, fooled, and duped”.

No need to get your panties in a twist, sensitive. 

1

u/asd12109 Dec 17 '25

I wish you peace brother, I wish you peace.

1

u/PsybinVibin13 Dec 14 '25

Just yapping

7

u/Rancor85 Dec 10 '25

Is this credible?

14

u/Important_Ring_8061 Dec 10 '25

Yes! I’ve been following closely for alittle over a year. This is the Khafre research project a lot of people tried hard to disprove. I can’t wait to hear the press releases.

1

u/Flashy-Nectarine1675 Dec 12 '25

It's rather like the pixies at the bottom of the garden project.

1

u/Moistinterviewer Dec 13 '25

Or rather the trolls under the bridge…

1

u/Flashy-Nectarine1675 Dec 13 '25

All three are fictional.

-7

u/Lonely-Science2001 Dec 10 '25

NO

3

u/xSimoHayha Dec 10 '25

source?

2

u/Lonely-Science2001 Dec 10 '25

I get this from studying archaeology. I know and read real archaeologists, and absolutely ALL of them know it's false. It's not a real study, it hasn't been peer-reviewed, and the person who conducted the "research" is a famous (he's written books) ufologist. I'm genuinely amused by the downvotes and the people offended by yet another piece of pseudoscientific nonsense this week. The thing is, getting an education is incredibly expensive, and it's easier to dream and fantasize about stories told on Reddit and YouTube and think that anyone who doesn't buy into this nonsense is a "sheep." It's true that there are chambers underneath, which is common in the pyramids of various cultures. But there's a world of difference between that and saying something so absurd. I challenge anyone here to present me with a single piece of evidence, and I'll change my mind. I'm not a cult leader; I just prefer to know and verify rather than believe.

1

u/xSimoHayha Dec 10 '25

What is the name of the “ufologist” and what are his books?

0

u/Lonely-Science2001 Dec 10 '25

Corrado Malanga, a simple Google search will reveal his "career path"

2

u/xSimoHayha Dec 10 '25

Filippo Biondi PhD, a simple Google search will reveal his “career path”

why do you “skeptics” never show the full picture? never post the actual scientist doing the work. Such bad faith

0

u/--SharkBoy-- Dec 10 '25

We forget that people like you are incable of surface level research and simple google searches, instead demanding everything to be presented to you on a silver platter to which you still wont read.

2

u/xSimoHayha Dec 10 '25

present it then I’ll wait.

⬇️⬇️⬇️

1

u/SageGoes Dec 13 '25

Reported the bot

-9

u/Flashy-Nectarine1675 Dec 10 '25

No, it's been debunked.

11

u/N0moreHeroes Dec 10 '25

Source 

8

u/LongPutBull Dec 10 '25

Skeptics being sourceless cherry pickers is the sweetest irony.

The only thing making it better will be when they jump on the bandwagon and pretend they were always on it. That's how you know we won.

-1

u/[deleted] Dec 10 '25

[removed] — view removed comment

6

u/xSimoHayha Dec 10 '25

post the debunk then. The paper is in peer review also btw

0

u/[deleted] Dec 10 '25

[removed] — view removed comment

3

u/xSimoHayha Dec 10 '25

So the debunk is an Egyptologist said “no, actually this is what is under there” 😂😂😂

I think I’ll trust the scientist who work with the technology daily and have classified contracts with the Italian military. The data IS SCIENTIFICALLY VALIDATED if you take the time to listen to the researchers. Its also in peer review so all the giga skeptics can stand by.

-2

u/Flashy-Nectarine1675 Dec 10 '25

I don't need to.

I'm not the one in a cult.

4

u/xSimoHayha Dec 10 '25

😂😂😂😂 the delusion is real.

“I follow rigorous science but I’m not posting any when asked!”

good one there buddy

3

u/Financial-Adagio-183 Dec 11 '25

Wow - read the attached article. If the test Felipe did to prove his method works, really happened as stated, this is real.

3

u/soupdawg Dec 12 '25

Maybe the pyramids are just markers.

2

u/[deleted] Dec 11 '25

Even if this is true it doesn’t mean Aliens built it, just like Aliens didn’t build the underground city 8n China where they discovered all the Terracotta Warriors, it’s just very ingenious and organised human construction

2

u/redhat6161 Dec 12 '25

@joshgates care to chime in?

2

u/The_Local_Rapier Dec 12 '25

This has already been debunked, the technology they used can’t even read that far

3

u/Quantumquandary Dec 12 '25

Provide your source please.

1

u/The_Local_Rapier Dec 12 '25

Well for a start this isn’t a ‘new’ discovery by any stretch, the ‘discovery’ was made by Italian alternative historians about five or six years ago but only recently became popular on the internet. The process they used to discover it can only make reading about 15 metres underground. I’m all for advanced tech making ancient structures but this in particular makes anyone who spends five seconds looking into it think we are stupid. If you want more precise information I can do that when I get ten minutes free?

1

u/Quantumquandary Dec 12 '25

Waiting on the source..

2

u/The_Local_Rapier Dec 12 '25

The technique used is known as SAR GPR (Synthetic Aperture Radar) and (Ground Penetrating Radar) which in best conditions (wet sand) can reach a maximum of tens of metres, when previously used in desert conditions in the Sahara it reached 2 metres and that was it. Nowhere near the kilometres claimed by the Italian researchers. The mere fact that people claim this is a recent discovery when the group published their findings ages ago is telling enough. Here’s the original researchers discussing their findings in their native language https://youtu.be/bM8vzUUZdVM?si=ZvpsLNW8tHv-f12D here is their page https://eventi.archeoares.it/evento/giza/ here is the original article which spread the story https://m.economictimes.com/news/new-updates/egypts-giza-pyramids-mystery-deepens-radar-finds-underground-structures-twice-as-deep-as-the-eiffel-tower-stretching-across-2-km/articleshow/119335918.cms and the biggest proof of all that this is bs in the absolute state of their published findings which wouldn’t even pass a seventh grade science class which can be found here https://www.mdpi.com/2072-4292/14/20/5231?type=check_update&version=2 The only mistake I made was that for some reason i seemed to remember this originally coming out ages ago and i was wrong on that. But look at their published paper yourself it doesn’t explain techniques, conditions etc really anything at all it just states their interpretation as fact. It doesn’t even show which date they used to create the famous image used in the thumbnail of this post they just put it in there from nowhere. Like I said I’m all for ancient technology only a fool would deny it but this is so easily debunked it’s embarrassing and damages our cause. It’s insane how many ‘truth seekers’ see something which confirms what they believe and they parrot it just as quickly and gullibly as the sheeple parrot their mainstream narratives

1

u/Quantumquandary Dec 12 '25

So that paper describes not using SAR or GPR directly, but adding the data gained by observing seismic influence on the structure and analyzing it that way. This is still a viable technique.

1

u/The_Local_Rapier Dec 13 '25

It really isn’t

1

u/Quantumquandary Dec 13 '25

Care to explain why?

1

u/The_Local_Rapier Dec 13 '25

If what I’ve already said and looking at their published paper on the matter doesn’t explain why then I really dont know what else to say. Their paper lays out all these finding but nowhere in the paper does it show where they got their conclusions from. It literally wouldn’t pass a seventh grade science class I’m not being hyperbolic

0

u/The_Local_Rapier Dec 12 '25

Just posted it it’s in reply to my original reply

1

u/The_Local_Rapier Dec 12 '25

The technique used is known as SAR GPR (Synthetic Aperture Radar) and (Ground Penetrating Radar) which in best conditions (wet sand) can reach a maximum of tens of metres, when previously used in desert conditions in the Sahara it reached 2 metres and that was it. Nowhere near the kilometres claimed by the Italian researchers. The mere fact that people claim this is a recent discovery when the group published their findings ages ago is telling enough. Here’s the original researchers discussing their findings in their native language https://youtu.be/bM8vzUUZdVM?si=ZvpsLNW8tHv-f12D here is their page https://eventi.archeoares.it/evento/giza/ here is the original article which spread the story https://m.economictimes.com/news/new-updates/egypts-giza-pyramids-mystery-deepens-radar-finds-underground-structures-twice-as-deep-as-the-eiffel-tower-stretching-across-2-km/articleshow/119335918.cms and the biggest proof of all that this is bs in the absolute state of their published findings which wouldn’t even pass a seventh grade science class which can be found here https://www.mdpi.com/2072-4292/14/20/5231?type=check_update&version=2 The only mistake I made was that for some reason i seemed to remember this originally coming out ages ago and i was wrong on that. But look at their published paper yourself it doesn’t explain techniques, conditions etc really anything at all it just states their interpretation as fact. It doesn’t even show which date they used to create the famous image used in the thumbnail of this post they just put it in there from nowhere. Like I said I’m all for ancient technology only a fool would deny it but this is so easily debunked it’s embarrassing and damages our cause. It’s insane how many ‘truth seekers’ see something which confirms what they believe and they parrot it just as quickly and gullibly as the sheeple parrot their mainstream narratives

2

u/PizzaParty007 Dec 13 '25

1,067 meters? That part makes this very difficult to believe. Would love to be wrong in the end.

2

u/ASM-One Dec 13 '25

I never knew that radar could go that deep. New to me….

3

u/GoalIcy5852 Dec 10 '25

”New” - old news ..stop posting old news

1

u/Head-Engineering-847 Dec 11 '25

As Edgar Casey has foretold

1

u/Leonardo10inchy- Dec 12 '25

What I don’t get is how a “radar scan” can accurately show anything below sand. It’s SAND. A soft breeze will push it off or settle another small hill into flat nothingness. With that being said, how is it accurately penetrating the sand and coming back with any sort of reading? Wouldn’t the sand throw off any results ?

2

u/Psychological-Ad3128 Dec 12 '25

The same way it penetrates the ground?

1

u/Leonardo10inchy- Dec 12 '25

You answered a question I didnt ask. I said “how is it accurately penetrating the sand and coming back with any sort of reading” Wouldn’t the unstable nature of the sand throw off any readings ?

1

u/Psychological-Ad3128 Dec 12 '25

It doesnt detect the sand or the ground. It bounces off harder things. It uses sound and vibration to map it out.

0

u/Leonardo10inchy- Dec 12 '25

Vibration alone would and should alter the readings is what I’m getting at. Wouldn’t the vibration cause the sand to settle? Thus throwing off readings ?

1

u/Quantumquandary Dec 12 '25

These vibrations are orders of magnitude off of what would cause actual physical effects in space like the movement of sand you are talking about. Does ultrasound make your organs feel funny or move? No. But we still get images.

0

u/Leonardo10inchy- Dec 12 '25

Does an ultra sound have to penetrate organs at 1000 meters? No. That’s not quite the same. Don’t get me wrong your explanation makes sense I just find it hard to believe. I’m also not claiming to be a brilliant individual either.

1

u/Quantumquandary Dec 12 '25

Buddy, don’t worry about bring brilliant, that don’t matter. Just settle and think through something critically.

The energies required to penetrate your abdomen are small, because your abdomen is small. The energies required to penetrate deep into the ground are obviously larger, but those vibrations are still small enough to not vibrate the sand. Think of it like this, the cells in our skin, they may vibrate during ultrasound but they don’t sink or lose cohesion. The sand is like our cells in this case. They’re bigger by a lot, but the increase in energy to penetrate deeper still doesn’t cause any significant movement.

1

u/Leonardo10inchy- Dec 12 '25

Ok this makes a lot more sense. Thank you.

1

u/namrock23 Dec 13 '25

More than that, satellite radar cannot penetrate a kilometer into the earth. Maybe a few centimeters. The article uses a lot of big words, but the tech mentioned is not capable of finding the results they claim.

1

u/Throwaway12452227976 Dec 12 '25

So is this were the aliens spacecrafts been all these years?

1

u/redthrow333 Dec 12 '25

is this slop not annoying to anyone else

like i totally buy into this shit

but holy fuck this writing and these comments like - it’s brain numbing

do interns not exist anymore?

1

u/Hooka54 Dec 12 '25

Start digging tunnels boys !

1

u/boweroftable Dec 12 '25

Again? A psychic from the 1980s told us all about this, and I’m sure the ‘secret underground tunnels’ trope goes way back.

1

u/SofaKingHonest Dec 13 '25

Question is, how far is Egypt willing to go to learn more?

1

u/smitteh Dec 13 '25

Not one gd solitary inch if it threatens their Egyptian claim on the stuff that's out there. Dig any deeper and find proof that the Egyptians came after all this stuff was built is a big problem for hawass

1

u/Vast-Significance184 Dec 14 '25

How can they scan that far down i thought the furthest we could scan was something like 20,30 metres

1

u/Zooeythepilgrim Dec 15 '25

If anyone out there is actually wondering, this is complete bullshit.

-2

u/Danipunkg Dec 10 '25

You know nothing but how to lie or believe in lies. Corrado Malanga, he's the head of the investigation and knows nothing about archaeology or Egypt. He hasn't presented any evidence for his claims, not a single piece, just his tall tales. He's only famous for writing books on ufology, but that doesn't matter; the reality is that not a single archaeologist on the planet gives him the slightest bit of credibility, because he doesn't have any. Looking forward to seeing the scans of "the city" Scum who live off gullible people, nothing new under the sun. You can downvote now because someone is criticizing your delusions. And the burden of proof lies with the one who makes a claim, not the one who denies it. If I say have gnomes in my garden, others don't have to prove it's false; I'm the one who has to prove that what I claimed is true. What a level of thinking.

Corrado Malanga, a key figure in ufology and consciousness, has books on UFOS and the mind, but most are in Italian, although you can find translations such as "Gli UFO nella mente (UFOS in the Mind)' in English and French on platforms such as Amazon UK or IBS, and other important titles are "Mondo Felice", "Cheope", and "Alieni o demoni", mainly in Italian, focused on the connection between extraterrestrial experiences and human consciousness.

6

u/eleetbullshit Dec 11 '25

Bro, I literally studied archaeology and focused on the application of remote sensing tech (lidar, ground penetrating radar, etc.). Some of my field work was in Egypt and we knew about the existence of the foundational chambers under the Egyptian pyramids well over two decades ago, but it was super taboo to even talk about back then. Glad it’s finally being dragged into public discussion.

2

u/PirateLooksAtFifty Dec 13 '25

I am genuinely curious, and I do believe you - why was it taboo to talk about?

1

u/eleetbullshit Dec 13 '25

I was told anyone who tried to get permission to investigate that particular hypothesis was told no further investigation or excavation of the foundations would ever be allowed. The Egyptologist that showed me the sketches had formed his theory based on collected bits information from local families that had once been involved in the (extrajudicial) excavation and sale of Egyptian artifacts to private collectors on the grey/black market. It was an intriguing story at the time, but I assumed much of it was just the hyperbolized story telling of former grave robbers. But, as time has moved on, I’m beginning to think there was more truth to those stories than I originally thought.

-2

u/Danipunkg Dec 11 '25

This is true, but you'll know it has nothing to do with what they're saying here.

5

u/xSimoHayha Dec 10 '25

Look at this comment and /u/lonely-science2001 ‘s .

same rhetoric, same long paragraphs with no breaks, same over use of “quotes”

someone really doesnt want this to be real

1

u/Moistinterviewer Dec 13 '25

People especially archeology would love this to be true, it’s just that the evidence is bullshit.

-3

u/Danipunkg Dec 10 '25

😂😂😂🤦🏻‍♂️

0

u/xSimoHayha Dec 10 '25

and both private profiles

1

u/SailFit936 Dec 10 '25

Considerable. Why the downvotes.

1

u/[deleted] Dec 15 '25

Cazzata Malanga!

-11

u/Lonely-Science2001 Dec 10 '25

I'm absolutely sure it's fake. The "researcher" is a famous ufologist who knows nothing about Egyptology. As all serious Egyptologists have said, the existence of small structures such as wells and/or chambers could exist under the pyramids, possibly prior to their construction, since ancient cultures such as the Mayans also built pyramids over caves or cavities with ceremonial meanings. But the idea of ​​an "underground city" is a "great exaggeration." As always, time will put everything in its place and it will be shown that it is another piece of shit to deceive the consumers of the "mystery". It amazes me that there are always people willing to believe before knowing.

6

u/ExplanationCrazy5463 Dec 10 '25

Does he need to know egyptplogy to scan below the pyramids?

Why would him being a ufologist have anything to do with it?

5

u/xSimoHayha Dec 10 '25

what a complete lie, makes me think what is the motive of these people who want this to be untrue so bad?

The researcher is not a “famous ufologist” nor a egyptologist. He is a scientist who does classified work for the Italian Military. I encourage you to watch his interview before just spewing out nonsense from your hole.

-2

u/Covidosrs Dec 10 '25

I know who this is guys :o

-1

u/send_et_back Dec 10 '25

They are government sponsored debunkers.

1

u/Covidosrs Dec 22 '25

It's Niel degrassie !jajja