Archaeologists Found The Hidden Tunnels Near the Great Sphinx — And Where It May Lead

There is a cavity in the bedrock beneath the Great Sphinx, directly under its left paw, that shows up on seismic instruments as a hollow space in solid rock. It is not a crack, it is not erosion. When researchers struck the ground with a steel plate and read the sound waves bouncing back, the echo pattern told them something was down there that shouldn't be. An empty pocket in the stone, sealed, waiting, in a spot no drill has ever reached. And the official answer, the one printed in the guidebooks, the one the guides at Giza repeat to every tour group, does not explain what is actually underneath that statue. For over 200 years, we were told the Sphinx is a single carved rock, a monument, nothing more. But every time a modern instrument has been aimed at the ground around it, the same thing happens. The rock answers back. It tells the machine there are spaces down there, voids, passages, something. Today, we are going to go through exactly what has been found in the ground beneath and around the Great Sphinx, who found it, and why the explanation given to the public leaves the most important question completely open. Stay with me, because the part everyone argues about online is not the part that should unsettle you. Most people who come to Giza never think about the ground. They photograph the face, they ride a camel, they stand for a picture with the monument behind them, and they leave. They are looking at the statue. Almost nobody looks down. And that is the mistake. Because the strangest thing about the Great Sphinx is not the face, and it is not the missing nose. It is what the surveys keep finding under the paws, under the body, in the enclosure floor. Sealed shafts, water-filled chambers, anomalies that light up on radar, and then, year after year, are never opened. Most people walk right past the real mystery without ever knowing it is under their feet. The monument itself is carved from a single ridge of limestone on the Giza plateau, shaped into the body of a lion with a human head. Mainstream Egyptology attributes it to the Pharaoh Khafre of the Fourth Dynasty, which would place its carving around 2500 BCE. That makes it roughly 4,500 years old. It is one of the oldest and largest monumental sculptures on Earth, cut directly out of the bedrock rather than built from blocks. And here is the first thing that does not sit right. For a monument this famous, this studied, this photographed, we still cannot agree on when it was made, who exactly ordered it, or why the ground beneath it refuses to behave like ordinary solid rock. The face has no inscription naming its maker. The body sits in a quarried pit that erosion patterns cannot fully explain. And directly below it, the instruments keep finding empty space. For most of modern history, the space under the Sphinx was simply unknowable. You cannot dig up a world monument to see what is under it. You cannot tear open the paws to check for rooms. So the ground stayed a sealed question, locked behind stone no one was allowed to break. And the answers people gave filled the gap. In the early 20th century, a French engineer named Emile Barrès spent more than a decade clearing sand from the Sphinx from 1925 to 1936. During that work, he reportedly opened a passage in the monument, and explored it. And then the entry was closed, and his records of what he found were lost. No written account of that exploration survives. A man went into a passage under the most famous statue on the planet, came back out, and the paperwork vanished. That is not a legend. That is the documented gap in the record. Whatever Barrès saw, we do not have it. And Barrès is not the only vanished thread. Over the centuries, a whole catalog of holes, shafts, and cuttings has been documented in and around the monument. And the confusing thing about them is that nobody can cleanly say which are ancient and which are modern. There is a hole bored into the back of the Sphinx, driven in during work in the 19th century, that reached more than eight meters into the rock before the tools jammed. There is a shaft cut into the top of the head. There are pits sealed with trapdoors during restoration campaigns in the 1920s. Cuttings made so workers could brace and repair the statue, and then closed again for safety. Some of these are unquestionably the marks of modern hands, but others have no clear origin at all. And the surveys keep suggesting that a few of them do not simply dead end in the stone. They seem to go somewhere. And the deeper problem is exactly the one Barrès embodies. Every time someone has actually gone into one of these openings, either the passage was sealed behind them, or the record of what they saw was lost, or the feature was quietly filled and closed, the pattern is not a single missing report. It is a monument whose openings keep being entered and then shut, generation after generation, until no continuous account of the inside survives. That missing report is where the modern mystery really begins. Because once the technology arrived to look under the ground without a shovel, the surveys did not come back empty. They came back full. Now, to understand why the ground under the Sphinx matters so much, you have to understand what the ancient Egyptians themselves said about it. Between the paws of the Great Sphinx stands a slab of pink granite called the Dream Stele, set there by the Pharaoh Thutmose IV more than 3,000 years ago. The text describes the young prince falling asleep in the shadow of the Sphinx, which was already ancient and buried to its neck in sand even then, and being told in a dream to clear the sand away. That much is well known. But there is a detail in the older Egyptian name for this whole area that most tours skip. The Giza Plateau was called in the ancient texts the House of Osiris, Lord of Rostau. And Rostau, in the ancient language, does not mean a temple on the surface. It refers to passages, underground tunnels. The name the Egyptians gave to their own most sacred ground was a name that meant the place of the hidden passages below. For decades, scholars read that as poetry. Symbolic language. A religious metaphor for the underworld the dead were believed to travel through. Not a description of anything physically in the rock. But here is where it gets strange. When Egyptian archaeologist Zahi Hawass excavated a feature on the plateau called the Osiris Shaft along the causeway that links the Sphinx to the second pyramid, he found that the name was not only poetry. The shaft descends in stages. Nearly a hundred feet down into the plateau, through level after level, ending in a chamber flooded with clear groundwater. At the bottom, cut into the floor of the tomb, was the hieroglyphic word per, meaning house. The ancient builders had labeled the underground themselves. And the shaft is stranger the deeper you go. The upper level opens onto a chamber. Below that, a second level holds niches cut into the rock. Some of them containing heavy stone coffins. And below even that, reached through a shaft in the floor, is the third and final level. A chamber that floods with clear groundwater. With a stone coffin of its own set into the flooded floor. To date the thing, workers were lowered on ropes into the water to bring up artifacts. Off one wall, a corridor about six meters long was cut in a later period. And when it was checked, it too was closed off and led nowhere further. Layer after layer, coffin after coffin, ending in a flooded room at the bottom of a hundred foot descent. The house of Osiris, lord of the passages, was not a metaphor written on a wall. It was a real descent, cut through solid rock, ending in water exactly where the ancient name said the passages would be. The mythology was documentation. And that is clue number one. Hold on to it, because it means every ancient reference to what lies beneath Giza has to be read twice now. Once as religion, and once as a map. So, if the Egyptians told us there were passages under this ground, and one of them turned out to be real, the obvious question is what the instruments find when they aim at the Sphinx itself. And the answer is where this story stops being folklore and becomes a physics problem. In 1977, a team from Ain Shams University in Cairo, working with the Stanford Research Institute of California, brought geophysical equipment to the Sphinx. They ran resistivity surveys, which measure how electric current passes through rock, and acoustic sounding, which reads how sound moves through it. Solid limestone gives one signal. A hollow space gives a completely different one. And the readings came back full of anomalies. The strongest of them sat in front of the Sphinx's forepaws and around the base, spaces where the rock behaved as if it were not solid at all. The following year, in 1978, that work expanded. The team drilled a small number of boreholes directly on the largest anomalies, and lowered a television camera down each one to see what was making the instruments react. This is the part that gets quoted selectively. So, let us be precise about what happened, because both halves of it matter. The instruments were sensitive. The team noted that both the resistivity and the seismic sounder were reacting to very small features, and that a real chamber full of water, or a tunnel packed with rubble, would have lit up those instruments unmistakably. So, they picked the five strongest anomalies and drilled. Down each borehole, the camera showed natural cracks in the bedrock, rather than a finished cut chamber. The survey leaders concluded there were no large rooms under that specific footprint. That is the mainstream position. And it is real, and any honest telling of this story has to put it front and center. But hold that thought, because it is not the end of the surveys. It is the beginning of them. The boreholes were few. They were shallow by agreement, and they sampled only the spots directly under the statue's platform. They did not, and could not, rule out everything in the wider ground. And that matters, because other teams, using other methods, aimed at slightly different places, in other years, kept getting readings the drills never reached. In 1987, a Japanese team from Waseda University surveyed the Sphinx with electromagnetic sounding, a completely different technology from the American resistivity work. And they did not find nothing. They reported evidence of a tunnel running north to south under the monument. They found a water pocket near the south hind paw, a few meters below the surface. They found another cavity near the north hind paw, and they detected grooves that appeared to continue underneath the body of the statue, as if something ran beneath it in a line. Different country, different decade, different machine. And the ground gave up the same kind of answer. Spaces. Passages. Water where there should be stone. Then there is the reading almost nobody talks about, because the man who took it was chasing a different question entirely. Geologist Robert Scoche came to the Sphinx in the early 1990s to study the erosion on the enclosure walls, arguing the weathering pattern was older than the accepted date. To test the depth of that weathering, his team ran seismic studies around the base, striking a plate to send sound waves down through the limestone and reading what came back. And in that data, off to the side of his main argument, they recorded something else. A cavity. A hollow space in the bedrock beneath the left paw of the Sphinx. He was not looking for a chamber. He found the signature of one anyway. Rectangular enough, regular enough, that others who saw the data started using a word Scoche had never intended. They called it a possible hall of records. Three independent surveys. Three technologies. Three different teams from three different countries spread across decades. And every one of them, in its own way, reported empty space in the ground around the Sphinx. Not identical results. Not proof of a single grand chamber. But not silence either. The rock kept answering. And that is the second clue. It is bigger than the first. And it is the one that turned an old ghost story into something serious researchers now argue about in print. Because if you strike the ground under the most studied statue on earth, and it keeps echoing back hollow, you are left with a question no camera has yet been allowed to close. If you find buried history as unsettling as I do, subscribe and turn on the bell. Because what comes next is the reading that made headlines around the world. And the one authorities moved fastest to dismiss. Now, where did the idea of a chamber under the Sphinx even come from? Because to understand why the modern surveys land so hard, you have to know that people were told exactly where to look long before the machines existed. In the first half of the 20th century, an American named Edgar Cayce, who claimed to speak while in a trance state, repeatedly described a sealed hall of ancient records buried near the Sphinx. A repository of the history of a lost age, hidden in a chamber that would be found near the monument's paws. Mainstream experts dismissed the claim entirely, and by the ordinary standards of evidence they were right to. There is no scientific basis for a psychic prediction. But here is the uncomfortable coincidence. Cayce pointed at the paws. And decades later, the paws are exactly where the instruments keep flagging anomalies. The forepaw cavity from the 1977 survey. The hindpaw water pockets from the Japanese survey. The hollow under the left paw in Shouk's seismic data. The prediction was almost certainly unscientific. The readings are real. And they cluster in the same place. That does not make Cayce right. It makes the ground under the paws the single most interesting patch of rock on the plateau. And the one that has never been opened. Which brings us to the reveal that put Giza back on the front page. And it did not come from a shovel. Or a borehole. Or a man climbing into a shaft. It came from space. In March 2025, an Italy-based research group known as the Cafre Research Project announced results that went viral almost overnight. The team, led by researcher Armando May with radar engineer Filippo Biondi and professor Corrado Malanga, used a technique called Synthetic Aperture Radar Doppler Tomography. In plain terms, they took radar data captured from satellites in orbit and processed the tiny vibrations in that signal to build a layered, three-dimensional picture of what sits below the surface. Radar from hundreds of miles up read carefully enough to model the inside of the ground. And what they claimed to see beneath the Giza plateau was not a crack and not a cavity. It was structure. Vertical shafts. Chambers on their most expansive claims. A network of spiraling shafts and enormous chambers extending thousands of feet down. Arranged in geometry too regular, they argued, to be natural rock. The team also pointed to three shafts they had relocated in the ground within the triangle formed by the Sphinx, Khufu's Pyramid, and Cafre's Pyramid. Guided, they said, by spectral traces detected from orbit. They went back to shafts earlier explorers had noted and lost track of, and found them again. Shafts they described as descending on the order of 40 meters into the bedrock. More than 130 feet. With squared walls lined in places with limestone and sandstone blocks. Geometry precise enough that in their reading, they did not look like simple water wells or casual diggings. They compared the construction to machinery rather than masonry. And around 40 feet down, they reported wide cavities opening off the shafts. Chambers branching away from the vertical descent into the dark. And they connected all of it to something written 24 centuries ago. Because the Greek historian Herodotus, who visited Egypt in the 5th century B.E.C., described a structure he called a labyrinth. A building of 3,000 rooms, half of them above ground, and half of them cut below it. Which he said surpassed even the pyramids. For centuries, scholars have argued about whether he exaggerated. Whether the underground half ever existed. Whether a man from Greece had simply been told tall tales. The Khafre team's argument is blunt. Herodotus may have been describing something real. Something still down there. Something the radar is now, for the first time, beginning to see. That is the third clue. And notice what it does to the first two. The ancient name for the plateau meant the place of hidden passages. The surveys across five decades kept finding empty space in the rock. And now, a satellite technique claims to see organized structure in the exact ground those older readings flagged. Every time we look at this monument with a better tool, the answer does not get simpler. It gets bigger. Here is where the story takes on the texture of every great sealed mystery. Because with all of this, across nearly 50 years, not one of these anomalies has been opened and shown to the world. The 1978 boreholes were narrow, drilled on a handful of spots, and deliberately not driven deep by agreement to avoid disturbing the monument and the water table. The passages Beres explored were sealed and his account lost. The shaft on the Sphinx's rump, opened in 1980 after being noticed decades earlier, turned out to be a narrow, dead-end tunnel with modern debris at the bottom. Which is exactly the kind of anti-climax that gets used to close the whole subject. And the 2025 radar claims, the biggest of all, have never been confirmed by anyone physically going down. The team submitted a formal proposal to Egyptian authorities requesting access to the debris-filled shafts near the Sphinx, hoping to clear them and physically descend. Permission to actually do that has been another matter entirely. The monument is sacred. The bureaucracy is heavy. And so the most explosive reading ever taken at Giza sits exactly where it was found. Detected. Announced. Argued over. And unopened. Known to exist on a screen. And forbidden to enter in the rock. Now, does any of this prove the most extreme version of the story? That there is a vast engineered underworld beneath the plateau. A hall of records. A lost archive from a forgotten age. Probably not. And the truth here deserves better than hype. Let us be honest about the strongest objection. Because it is a serious one. In 1978, the same survey that found the anomalies also drilled into them, put a camera down, and reported only natural cracks in the bedrock, rather than cut rooms. In 1992, researchers from the Egyptian National Research Institute of Astronomy and Geophysics ran a shallow seismic study of the ground below the Sphinx, and reported the subsurface rock was layered and unbroken, with no clear evidence of large cavities in what they surveyed. And the 2025 satellite radar claims, the most dramatic of all, have been sharply disputed. Prominent Egyptologist Zahi Hawass has flatly rejected the idea of a hidden underground city. And many radar specialists have questioned whether synthetic aperture radar from orbit can really resolve solid structure that deep. Or whether the software is finding patterns that are not there. That is a real critique. And it is not a small one. A hollow reading on an instrument is a very long way from a room a human being can stand in. So no, this is not proof of a lost civilization's archive under the sand. I am not going to insult you by pretending it is. But here is what the grounded, skeptical view still cannot make ordinary. Strip away every wild theory, throw out the psychics and the second Sphinx claims, and the thousand-foot shafts, and you are left with a set of plain facts that are arguably stranger than the fantasy. A monument carved from living rock at least 4,500 years ago, so precisely that we still cannot fully explain its making. An ancient name for the ground that literally means the place of hidden passages, which turned out to describe a real hundred-foot shaft ending in water. Multiple independent surveys across five decades using different technologies from different countries that keep flagging empty space and water pockets clustered under the paws. An early exploration whose written record simply disappeared. And a modern radar claim so large that the response was not curiosity, but denial. You do not need a lost civilization to be unsettled by that. You just need to look at what the instruments actually keep saying. And if even the modest version of this is true, it means something uncomfortable about the story we tell ourselves. It means the most studied monument on Earth still has sealed spaces underneath it that no living person has entered. It means that for the better part of a century, the experts have been standing on ground that answers back hollow and choosing over and over not to open it. It means our picture of Giza is not a finished portrait. It is a sketch with the underground left blank. And if our history is missing pages this large about a monument this famous, then what are we missing about the ruins we have barely surveyed at all? And there is one more thread the radar team pulled that is worth sitting with, precisely because it sounds impossible. The same group argued that a second buried sphinx-like mass may sit beside the known one hidden beneath a raised mound of hardened sand near the monument. Their reasoning leans partly on that granite slab between the paws, the dream stele, which is carved with a pair of the mythical guardian figures rather than one, a doubling that alternative researchers have pointed to for decades as a hint that the guardian was never meant to stand alone. Mainstream experts reject the second sphinx claim outright, and it may well be nothing, but notice how it fits the pattern of everything before it. The ancient carving shows two. The old name promised passages. The surveys keep finding hollows. At every turn, the monument seems to be pointing at more than the single carved rock we are shown. Think about what the technology is going to do next. The scanning methods are improving every year. What took a sledgehammer and a borehole in the 1970s can now, its advocates argue, be attempted from orbit. The next generation of surveys planned for Giza is described as capable of mapping the plateau's interior in three dimensions, of seeing every void and shaft the way an image sees through the body. If the crude first versions of this already found cavities under the paws and shafts descending 40 meters, the question is no longer whether there is more down there. The question is how much and who will be allowed to open it. Here is the one question that will not let go. The ancient Egyptians named this ground after its hidden passages. They told us, in their own language, that the important things at Giza were below the surface, not on it. If they buried the Osiris shaft nearly 100 feet down and cut the word house into its flooded floor, if they went to that much trouble to hide and mark a chamber in the rock, what does that say about what else they meant to keep down there? You do not name your most sacred ground the place of the passages and mean nothing by it. And whatever is down there, in the cavity under the paw, in the shafts the radar traced, in the passages the ancient name promised, it is still there, exactly where it has always been, waiting in the dark under the stone. So who found the hidden spaces around the Great Sphinx? Not a treasure hunter. Not a grave robber. Cairo geophysicists with resistivity meters. Japanese engineers with electromagnetic sounders. A geologist with a steel plate and a sledgehammer. Italian researchers reading radar bounced off the ground from space. Each of them, in their own way, struck the rock beneath the oldest guardian on Earth and heard it answer hollow. They found cavities. They found water where there should be stone. They found shafts descending into the bedrock. And every single time they reached the same wall, the readings are allowed, the digging is not. The cavity under the left paw has never been entered. The shafts the radar traced have never been descended. And the passages the ancient Egyptians named their whole plateau after are still, four and a half thousand years later, sealed in the dark beneath a statue that millions walk past every year without ever looking down. It was carved to last. It was carved to guard something. And whatever that something is, it is still under there, exactly where they left it, waiting for someone to finally be given permission and a way in.