Ancient Egyptians may have left behind a cryptic clue to a hidden second Sphinx, carved directly into stone more than 3,000 years ago.
The Dream Stele, positioned between the paws of the Great Sphinx, appears to depict two sphinx figures, hinting that the legendary monument may once have had a twin.
Now, Italian researchers who, in 2025, claimed to have uncovered massive underground structures beneath the Giza Plateau believe they have identified the second guardian buried deep beneath the sands.
Filippo Biondi revealed the discovery on Thursday while speaking on the Matt Beall Limitless podcast, explaining that lines drawn from the pyramids to the known Sphinx point to an identical mirrored location where the buried structure is believed to lie.
‘We are finding precise geometrical correlation, 100 percent of correlation, in this symmetry,’ he said, adding: ‘We are very confident to announce this… we have a confidence about 80 percent.’
Using satellite radar technology capable of detecting subtle ground vibrations, Biondi claimed the data points to a massive structure concealed beneath a 180-foot-high mound of hardened sand, which he said is composed of solidified sand rather than natural bedrock.
Preliminary scans show vertical shafts and passageways strikingly similar to those already found beneath the original Sphinx, with dense vertical lines believed to represent the solid walls of underground shafts rather than empty voids.
Beyond the possible second Sphinx, Biondi believes the findings hint at something even larger, an extensive underground complex beneath the Giza Plateau itself.
‘Down underneath the Giza Plateau, there is something very huge that we are measuring,’ he said. ‘There is an underground megastructure.’
The Dream Stele, also known as the Sphinx Stele, was erected between the front paws of the Great Sphinx of Giza by Pharaoh Thutmose IV around 1401 BC, during Egypt’s 18th Dynasty.
The ancient inscription, like many created during the New Kingdom, was intended to reinforce the ruler’s divine right to the throne.
Legend has it that the stele justified Thutmose IV’s unexpected rise to power by recounting a dream where the Sphinx promised him the throne in exchange for restoring the monument, blending political propaganda with religious legitimacy and documenting early restoration efforts.
However, Biondi and his team believe there is more truth than myth behind the imagery, saying the carvings showing two sphinx figures may not have been symbolic at all, but instead a clue to the layout of the monuments themselves.
He and his team are not the only researchers to suggest a second Sphinx may be buried beneath the Giza Plateau, as Egyptologist Bassam El Shammaa first raised the theory more than a decade ago.
El Shammaa cited ancient Egyptian records and mythology describing lightning striking the Sphinx, which he believes may refer to a second monument that was later destroyed, possibly after being cursed by one of Egypt’s most powerful deities.
Egypt’s former Minister of Antiquities Zahi Hawass has long dismissed El Shammaa’s theory, noting in 2017 the area has been dug by so many archaeologists, and it yielded nothing.
However, Biondi explained that when they traced a line from the center of the Khafre Pyramid to the existing Sphinx, the alignment created a precise geometric path across the plateau, forming what he described as a mirrored reference line used to identify the second location.
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