Wyoming's Devils Tower SHOCKS Geologists!

Wyoming's Devil's Tower is shocking geologists right now, and it has nothing to do with what you were taught about this rock in school. For over 100 years, scientists have been arguing about what this thing even is. Not where it came from, what it is. Four different teams, four different answers, and not one of them agrees. But that's not even the strangest part. The number everyone repeats for how old this tower is? It might be wrong by 9 million years. And here's the part that should really bother you. The name on every map, every sign, every postcard? It was never supposed to be Devil's Tower at all. A single mistranslated word, buried in a rushed government report from 1875, erased the real name of this place. And for the last 10 years, the United States government has been working to make sure nobody fixes it. So what is this rock actually hiding? And why does Washington want to keep you from ever finding out? Buried inside a rushed interpreter's notes from 1875 is a single mistranslated word. For 150 years, it has been erasing the real identity of one of America's most sacred landmarks. And the United States government is still working right now to keep that mistake in place. You've been told this Wyoming rock earned its ominous name because the first explorers thought it looked demonic. That's not what happened. A garbled translation swapped the word for bear with the word for evil spirit and turned a mountain more than two dozen tribes call Bear Lodge into Devil's Tower. For the last decade, the U.S. Senate has introduced bill after bill to make sure nobody fixes it. In 2014, Lakota spiritual leader Chief Arval Looking Horse asked Washington to formally give the mountain its true name back. Ten years later, a federal committee agreed with him. The name still hasn't changed. Somewhere in northeastern Wyoming, 867 feet of solid rock is still standing under a name it was never supposed to carry. Somewhere in northeastern Wyoming, 867 feet of solid rock rises straight out of flat grassland with nothing around it to explain why it's there. No mountain range leading up to it. No chain of similar formations nearby. Just one tower standing completely alone, visible for miles in every direction. A gray-brown fortress fluted from base to summit like the pipes of some impossible organ. You've probably seen it before without knowing what you were actually looking at. In 1906, Theodore Roosevelt looked at that same silhouette and used a brand new law, the Antiquities Act, to declare it the very first national monument in the United States. Not the Grand Canyon, not Yellowstone's geysers. This one, first. The push to protect it hadn't even started with him. A temporary forest reserve had already set the land aside more than a decade earlier, but a reserve had no teeth. A Wyoming senator spent years pushing for something the law could actually enforce. 70 years later, Steven Spielberg's production team scouted this same rock for close encounters of the third kind and built an entire alien mothership sequence around its summit. The film worked so well that a nearby campground still projects it onto an outdoor screen every summer, with the real tower looming behind the movie screen like it's watching its own performance. Today, more than 400,000 people drive out to see it every single year. It has a name, a federal designation, a place in American mythology as one of the most photographed rock formations on Earth. And that's exactly the problem, because almost nothing about what you just heard is as settled as it sounds. Not the shape of the rock beneath your feet. Not its age. Not even the name carved into the sign at the entrance. What looks like the most well-documented monument in America is actually one of its least understood. Even the ground it sits on carries a hidden history. Workers digging a sewage line through the monument in 1997 turned up marine fossils sealed inside the rock, proof that this entire stretch of desert plain was sitting at the bottom of an ancient inland sea long before it was anything sacred at all. Every geology textbook will tell you Devil's Tower is an igneous intrusion, a body of magma that pushed up into softer rock and hardened. That much nobody disputes. But ask a geologist exactly what shape that magma body was, or whether it ever reached the surface as a volcano, and you'll get four different answers from four different decades of research, and none of them fully agree. The first serious theory came from geologist Everett Carpenter in 1888, who called it the neck of an extinct volcano. Its magma conduit hardened after the surrounding cone eroded away completely. Clean story. Intuitive. It's stuck. But there's a hole in it big enough to walk through. If this were really a volcanic plug, there should be evidence of an actual volcano around it. Ash layers, lava flows, pyroclastic debris. Nobody has ever found any. The rock surrounding the tower is ordinary Jurassic and Cretaceous sedimentary stone, sandstone, and shale laid down in ancient seas, with no trace of the eruption the theory requires. So in 1907, two researchers proposed something different. A lacolith, a mushroom-shaped mass of magma that never broke the surface at all, pushing the layers above it into a dome before erosion stripped the dome away. It's still the label on official USGS maps today. There's just one issue. A true lacolith bends the rock layers around it upward into a bulge. At Devil's Tower, those layers lie completely flat. No dome, no bulge. The evidence simply isn't there, even as the label kept getting reprinted on government maps. A third camp calls it something simpler. A stalk. A relatively uniform blob of hardened magma with no dramatic shape at all. The National Park Service itself leans toward this one, the least assumption-heavy explanation. But simplest isn't the same as proven. It's the geological equivalent of a shrug. Then in 2015, a research team reopened the whole question in the journal Geosphere. Using magnetic flow analysis and thermal modeling, they proposed something almost nobody had considered, that this isn't a plug or a lacolith or a stalk at all, but a lavacoolie, a thick, slow-moving tongue of viscous lava placed inside the crater of a specific kind of explosive volcano called a maillard. Newest theory. Real modeling behind it. Still hasn't settled anything. More than a century after Carpenter's first paper, mainstream geologists are still fundamentally disagreeing about what this rock even is. And the cruel twist is this. The exact same erosion that carved the tower into view and made it visible in the first place is the erosion that destroyed the proof that could ever tell us how it actually formed. You can't have one without losing the other. The National Park Service says this outright on its own signage. No theory has ever been conclusively proven because the evidence needed to prove any of them eroded away millions of years ago. If the shape is disputed, you'd hope the age at least was locked down. It isn't. For decades, the number you'd find in almost every book, every museum placard, every park ranger's talk was 40.5 million years old. That figure comes from a single 1961 study published in the journal Science using potassium argon dating on the tower's feldspar crystals. Groundbreaking science for its time. Also, by modern standards, imprecise. The original paper reported a margin of error of plus or minus 4%, which sounds small until you realize 4% of 40 million years is over 1.5 million years of uncertainty. Then in 2002, a different research team ran a more advanced version of the same test called argon-argon dating, which uses the same radioactive decay principle but isolates the results with far greater precision, catching contamination and alteration older methods miss. Their result? Devil's Tower is roughly 49 million years old, almost 9 million years older than the number everyone had been repeating for four decades. And they found the exact same age, within a rounding error, at the nearby Missouri Buttes, a separate rock formation most people have never heard of, suggesting both sites came from the same magmatic event. Here's where it gets uncomfortable. That 2002 result was only ever presented as a conference abstract, never a fully peer-reviewed paper, which means it occupies an OD'd middle ground in the scientific record, taken seriously by specialists, but never elevated to the same institutional weight as the original 1961 publication. And so decades later, you can still find National Park Service pages using the old figure of 40.5 million years, right alongside newer NPS pages, quietly citing 49 million, as if two departments of the same agency never had the conversation. Nobody corrected the record. They just let both numbers keep circulating. That inconsistency didn't go unnoticed. Young Earth creationist organizations have specifically targeted this discrepancy as evidence that radiometric dating itself can't be trusted, arguing instead that the tower formed rapidly during a global flood roughly 4,500 years ago. To be clear, this is not a competing scientific theory. It's a religious framework applied after the fact to dismiss a method that has been independently verified across thousands of geological sites worldwide. But the fact that mainstream science handed them a genuine, unresolved discrepancy, two different ages, both published by credentialed geologists, is exactly the kind of gap that makes a shaky argument sound more credible than it should. The confusion is real. The conclusion drawn from it is not. So the tower's shape is disputed. Its age is disputed. What about the thing everyone actually photographs? Those enormous vertical columns that make it instantly recognizable from space. Surely that part is simple physics. It is physics. But it's stranger than it looks. Columnar jointing happens when a large mass of cooling magma contracts and cracks under stress. And the most efficient way for that stress to release is through fractures meeting at angles of roughly 120 degrees, which naturally tends to produce six-sided columns, though you'll find columns with four, five, and seven sides mixed in. You've probably seen smaller versions of this at places like Giant's Causeway in Ireland or California's Devil's Postpile. What makes Devil's Tower different is scale. Its columns can reach 20 feet across and run the full height of 600 feet, dramatically larger than almost anywhere else on the planet. Geologists call it the world's largest example of columnar jointing. There's another detail buried in that structure that took decades to properly explain. Near the base, the columns lean outward at an angle. Toward the core, they straighten into near-perfect verticals, an arrangement geologists call an inverted fan. For years, this was just an oddity nobody could fully account for. Then in 2018, a team of volcanologists ran an experiment that had never been attempted before. They took real basalt from an Icelandic volcano, heated it to melting, and precisely measured the exact temperature at which it fractured into columns as it cooled, publishing the results in Nature Communications. The cracking, they found, doesn't happen at the melting point. It happens well below it, between 840 and 890 degrees Celsius. And the speed of cooling directly controls the size of the columns, with slower cooling producing the massive columns you see at Devil's Tower. That single experiment turned a formation people had been staring at for over a century into a working thermometer, a frozen record of exactly how a magma body cooled millions of years ago, written in stone and legible today. NASA scientists have since used this exact jointing pattern as a comparison model for eerily similar structures photographed on the surface of Mars, some of them sitting inside craters scientists believe once held liquid water. The same fracture pattern carved into a Wyoming rock is now being used to study a planet nobody has ever stood on. The rock, in other words, is not done talking. Everything so far, the shape debate, the age discrepancy, the column physics, is a story geologists have been arguing about since the 1880s. It is not the oldest story about this place. Long before Carpenter published his first theory, long before Roosevelt signed anything, this rock already had a name. And it wasn't the one on the sign. Today, the National Park Service states plainly that more than two dozen Native American tribes hold this formation sacred. Tribes across the plains, including the Lakota, Cheyenne, Crow, Arapaho, Shoshone, and Kiowa. And almost every one of them independently arrived at some version of the same name. In Lakota, it's Mato Tapila, Bear Lodge. In Cheyenne, it's called Bear's Lodge, sometimes Bear's Teepee. The Crow call it Bear's House. The Arapaho call it Bear's Teepee as well. Only the Kiowa break the pattern, calling it something else entirely, which fits with their own distinct migration history, separate from the Northern Plains tribes. That overlap across unrelated languages and nations, all converging on a bear, is not a coincidence. It comes from a shared origin story that predates any written record of this place. The story varies in the details depending on which tribe tells it, but the bones of it stay the same. Children, usually a group of girls, sometimes a group of brothers, are out playing when a massive bear begins to chase them. They climb onto a low rock to escape, and the rock itself rises beneath them, lifting them into the sky and out of the bear's reach. Furious, the bear claws at the sides of the rising stone, breaking deep vertical grooves into it as it climbs after them and fails. The girls keep rising until they become the seven stars of the Pleiades, permanently out of reach, and the claw marks stay behind on the rock forever. Lakota versions tell it with six or seven children, sometimes rescued by a giant eagle instead. Crow versions describe two girls saved when the rock grows beneath them by the power of the Great Spirit. Now look at the tower again. Those deep, vertical, evenly spaced columns, the exact feature geologists have spent over a century trying to mathematically explain through cooling rates and fracture angles, were explained by the people who lived alongside this land as claw marks left by a bear, centuries before anyone had the tools to measure a joint pattern or run an argon-argon test. Two completely different knowledge systems, arriving at the same physical detail from two entirely different directions. One explains the columns through geochemistry, the other explains them through story. Neither one requires the other to be wrong for the vertical grooves to be real. So if this rock had a real name, tied to a real, living, shared cultural memory long before any American expedition arrived, how did it end up with the name Devil's Tower? That answer takes us to 1875, and it is not a flattering one. That year, Colonel Richard Irving Dodge led an armed expedition into the Black Hills, officially framed as scientific exploration, but conducted in direct violation of the 1868 treaty that had guaranteed the Black Hills to the Lakota and their allies. The expedition followed closely on the heels of Custer's 1874 announcement that gold had been found in the region, and it functioned, whether Dodge called it that or not, as reconnaissance for the land grab that followed. Somewhere during that expedition, according to Dodge's own account, an interpreter rendered a native name for the formation as Bad God's Tower. Dodge shortened it in his notes, and later in his published book, to Devil's Tower. And the name stuck in American maps and records from that point forward. Here's the detail that undercuts the whole story. The National Park Service states there is no historical evidence that any tribe ever associated this place with an evil spirit or a bad god. None. Linguists studying the Lakota language have noted something else instead. The word for a bad spirit, and the word for a black bear sound remarkably close to each other when spoken quickly and filtered through a rushed, imperfect translation during an armed government expedition that had every incentive not to slow down and get it right. Maps published between 1874 and 1901, before Dodge's name fully took hold, still labeled the formation Bear Lodge. Tribes never stopped calling it Bear Lodge. Starting in the early 2000s, they started fighting to make that the official name again. In 2005, a formal proposal went to the U.S. Board on Geographic Names. It was opposed by a Wyoming congresswoman who argued the change would confuse tourists. The proposal stalled. In 2014, Chief Arval Looking Horse, spiritual leader of the Great Sioux Nation, submitted a renewed and more forceful request. A Wyoming state senator pushed back, arguing that Bear Lodge is just as wrong as Devil's Tower. Since more than 20 tribes each have their own distinct name and no single alternative can claim to be correct. It's a fair point wrapped around a convenient outcome because the practical effect is that the existing colonial name stays exactly where it is by default. Then Wyoming's congressional delegation did something that effectively froze the entire process because the naming board legally cannot act on a proposal while related legislation is pending before Congress. Wyoming senators began introducing bills starting in 2015 specifically to protect the name Devil's Tower. That same delegation reintroduced the identical protective legislation again in January 2025. But the pressure didn't disappear. In June 2024, the Federal Reconciliation and Place Names Committee formally recommended that the Secretary of the Interior citing testimony that more than 20 tribes consider the current name offensive and noting that tribes had been formally pushing for this change since 1998. That's 26 years of paperwork sitting behind a name most visitors never think to question. And there's a legal wrinkle underneath all of it. Wyoming has a special statutory carve-out requiring explicit congressional authorization before any national monument in the state can be created or expanded under the Antiquities Act, the exact law Roosevelt used in 1906. The bureaucracy protecting this name isn't accidental. It's layered deliberately more than once. The sign at the entrance still reads Devil's Tower. The naming fight isn't the only unresolved conflict written into this rock. There's a second one playing out every summer involving the people who climb it. The first recorded ascent happened on July 4, 1893, when two local ranchers built a wooden ladder nearly 350 feet long wedged into a vertical crack on the tower's southeast face and climbed to the summit in front of a crowd gathered to watch them plant an American flag on Independence Day. That ladder stayed in use for over three decades and roughly 215 people climbed it before it was retired in 1927. Its remains are still there today. Listed on the National Register of Historic Places. Modern technical climbing arrived in 1937 when a climber led an American Alpine Club team up the sheer face using ropes and hardware. The following year, two more climbers pioneered what's still the most popular line to the summit, a route still crowded with ropes every climbing season, nine decades later. By the early 1990s, that climbing culture had grown into thousands of visitors a year with hundreds of permanent bolts drilled directly into the rock face. And for the tribes who consider this place sacred, that growth collided directly with ceremony. June is the most significant month on the site's spiritual calendar, tied to the summer solstice, when Sundance ceremonies, vision quests, and prayer offerings are traditionally conducted at the base of the tower, the exact weeks climbers were scaling the rock face and hammering bolts overhead. After three years of negotiation, the National Park Service issued a 1995 climbing management plan asking climbers to voluntarily avoid the tower entirely during June. Not a legal ban. A request. Some climbers refused to accept even that. In 1996, a group of climbers and a commercial guide sued the federal government, arguing the voluntary closure violated the separation of church and state. The case worked through federal court for three years. In 1998, a district court ruled against the climbers. In 1999, the Tenth Circuit Court of Appeals upheld that ruling on the grounds that because the closure was purely voluntary and carried no legal penalty for ignoring it, the climbers had suffered no actual injury to sue over in the first place. The Supreme Court declined to hear a further appeal in 2000. The voluntary closure survived, not because a court declared it sacred, but because it was too gentle on paper to violate anyone's rights. And remarkably, most climbers respect it anyway. According to the National Park Service, the number of climbers who voluntarily avoid the tower every June has resulted in roughly an 85% reduction in climbing activity that month compared to the rest of the year. It isn't zero. Sometimes fewer than 300 still go up anyway. And the Park Service records the number every year like a scoreboard nobody quite wants to be on. And the rock keeps generating new evidence nobody asked for. In 2006, after climbers reported a section of stone on the popular route shifting slightly underfoot, geologists from the U.S. Geological Survey found a real structural failure, a support pedestal now called the leaning column, showing signs of slow internal cracking that could eventually send it toppling onto the route below. They didn't find climbers capable of dislodging it through weight alone, but they painted markers across the failure zone to track whether it keeps spreading. Then in October 2024, researchers placed a seismometer directly on the summit for 21 hours to measure how the entire structure resonates and sways in response to the Earth's natural background vibration, the same kind of monitoring used on skyscrapers and bridges. A rock formation that stood for roughly 49 million years is still, right now, wearing sensors like a patient hooked up to a heart monitor. So here's where the story actually leaves you. Not with an answer, but with three separate cracks running simultaneously through the same rock. Geologists still argue over whether this is a stock, a plug, or a lava coulee frozen inside an ancient volcanic crater. And they still can't agree whether the tower is 40.5 million years old or closer to 49, because the very forces that exposed it also destroyed the proof that would settle the question for good. A federal committee has formally recommended restoring the name Chief Arval Looking Horse asked for a decade ago, while Wyoming's delegation keeps legislation alive specifically to keep that recommendation from ever taking legal effect. The sign at the entrance still reads Devil's Tower, a name born from a rushed interpreter, a violated treaty, and a century and a half of bureaucratic silence. And every June, hundreds of climbers still choose, entirely voluntarily, whether to scale a sacred site during its most spiritually significant month. A fragile agreement held together by nothing but goodwill, tested once in court, and surviving only because it was too gentle to be legally enforceable in the first place. None of these three fights need the others to be true. The geology doesn't depend on the naming dispute. The naming dispute doesn't depend on the climbing controversy. But all three are happening on the exact same 867 feet of rock at the exact same time, and none of them are finished. The columns still run in perfect vertical lines, lines one culture reads as claw marks, and another reads as a frozen cooling curve. Neither explanation has managed to erase the other. The bolts are still drilled into the rock face. The prayer cloths are still tied to the trees below it. And somewhere in a Wyoming congressional office, a bill sits quietly doing exactly what it was designed to do. Nothing. Indefinitely. Keeping a century and a half old mistake permanently, technically unresolved. The tower hasn't moved in 49 million years. Everything around it is still arguing about what to call it.