At a glance
WHAT IT’S REALLY ABOUT
Satellite radar vibrations suggest vast underground structures beneath Giza pyramids
- Filippo Biondi, a telecommunications engineer specializing in synthetic aperture radar (SAR), describes a method he says can reconstruct underground “tomographies” by analyzing surface vibration information captured from satellites rather than directly “penetrating” the ground.
- Using over 200 scans from multiple satellite systems (Italian COSMO-SkyMed and others like Capella), his group claims to see repeating vertical structures with spiral characteristics beneath the Khafre pyramid and across the broader Giza Plateau, terminating in very large chambers.
- Biondi argues the method is validated via benchmarks (e.g., imaging known tunnels, dams, and Italy’s Gran Sasso underground laboratory), while critics dispute feasibility and interpret results as artifacts.
- The discussion extends into hypotheses about pyramid function (vibration/resonance, “filters,” possible power-plant models) and proposes a practical next step: clearing existing shafts near the Sphinx/Khafre area and sending robots to investigate without major excavation, estimated at ~$20M.
IDEAS WORTH REMEMBERING
5 ideasThe core claim is underground mapping from surface vibration, not direct radar penetration.
Biondi repeatedly emphasizes that satellites capture Doppler-related vibration information at the surface (“entropy”), which is then inverted into tomographic images—countering the common criticism that SAR can’t penetrate ~1 km of rock.
The team says the method reproduces known internal pyramid features, used as a validation step.
Before expanding to deep subsurface scans, they tailored processing to the Khufu pyramid and claim it correctly showed known chambers and passages (Grand Gallery, Queen’s/King’s chambers) and additional internal structures.
Multiple independent satellite sources are presented as a check against processing artifacts.
Biondi says initial skepticism lasted months; the group only disclosed after seeing consistent results across different satellite constellations (Italian and American) and hundreds of scans.
The most provocative finding is a repeating deep geometry under multiple monuments.
They describe regular vertical structures with spiral-like characteristics beneath pyramids and the Sphinx, connected by ~3 m-tall corridors and ending in large chambers claimed to be ~80×80×80 m, at depths discussed up to ~1.2 km.
A practical verification pathway is proposed that avoids “digging the plateau.”
Biondi argues existing shafts between the Sphinx and Khafre could provide access; the plan is to clear debris and deploy drones/robots for safe inspection, potentially validating or falsifying the remote-sensing interpretation.
WORDS WORTH SAVING
5 quotesSkepticism. Skepticism. ... we had those results ... without disclosure ... for six months.
— Filippo Biondi
We are not penetrating anything. Because we are just grabbing the entropy that is on the surface of the Earth, and ... retrieving tomographies.
— Filippo Biondi
More than 200 [scans].
— Filippo Biondi
Today, we are sure ... that the pyramids are not tombs.
— Filippo Biondi
It’s a crime to not investigate.
— Joe Rogan
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