What was inside Craig Mound, what came out, and what the men who dug it threw on the ground
There is a piece of arithmetic at the center of this story that I have not been able to put down.
Ninety percent of all known engraved shell and ritual objects from the entire Mississippian world; every site, every state, a civilization that ran from the Great Lakes to the Gulf for six hundred years came out of one mound in eastern Oklahoma.
Not ninety percent of Oklahoma’s. Ninety percent of everything.
And it was dug out by four men who paid a farmer three hundred dollars, sold what would sell, threw the rest on the ground, and blew up what was left with dynamite.
This is the worst thing that has happened at an archaeological site in the United States. It happened within living memory. And outside Oklahoma, almost nobody has heard of it.
The place was nothing special
Start with what Spiro wasn’t, because it matters.
The site sits on a bend in the Arkansas River in Le Flore County, at the far eastern edge of Oklahoma. Twelve earthen mounds across about a hundred and fifty acres. One burial mound, two temple mounds, nine house mounds. Caddoan Mississippian people built and used it from roughly 900 to 1450, with most construction during the Harlan phase.
By the standards of its own world, that’s modest. Spiro was not the largest Mississippian center, Cahokia dwarfed it. It did not have the biggest population. It was not even palisaded, which Cahokia, Moundville, and Etowah all were.
Walk onto the grounds today and you see quiet green hillocks in farm country.
What Spiro had was position.
It sat at a hinge, the last point where the eastern woodlands meet the Great Plains, on a navigable river running east toward the Mississippi. Everything moving between those two worlds passed through, and the people at Spiro turned that geography into a trade network reaching from the Great Lakes down to the Gulf of Mexico, connecting on the order of sixty different peoples.
Obsidian from the central valley of Mexico. Copper from Lake Superior. Marine shell from the Gulf coast. Flint from Illinois.
If you have followed this series, you have already been standing at the edges of that network without seeing its shape. The copper at Anderson, Indiana. The Gulf shell at Pinson, Tennessee. Twenty thousand marine beads under Mound 72 at Cahokia, seven hundred miles from saltwater. The macaws and turquoise at Chaco.
Spiro is where you can see all of it in one room.
The room
Inside Craig Mound (the second-largest mound at the site, and the only burial mound) there was a chamber.
Cedar-lined. Roughly ten feet high and fifteen feet across. It had been constructed as a mortuary space for Spiro’s elite, and then the mound was raised over it.
And it never collapsed.
Six hundred years. A pocket of open air, sealed inside a hill of earth, holding since before Columbus sailed.
I need to explain why that is extraordinary, because if you don’t understand this part, nothing else in this article will land properly.
What does not survive
North American archaeology is the study of things that resist rot.
Stone. Fired clay. Shell. Bone. Copper. That is essentially the whole inventory, because in the climate of eastern North America, organic material is gone within a few centuries in almost every context. Wood decays. Cloth decays. Leather, cordage, basketry, feathers, fur, all of it returns to soil.
Which means the ancient America most people picture is a systematically distorted image. We see arrowheads and potsherds and think of a hard, spare, utilitarian world, because the soft world dissolved before anyone could look at it.
Think about what that leaves out. Clothing. Blankets. Baskets. Mats. Nets. Regalia. The dyes, the weaving patterns, the entire textile tradition of a continent which in every human society that has ever existed is one of the primary carriers of meaning, status, and art.
Gone. Everywhere. Almost without exception.
The chamber inside Craig Mound is the exception.
What was in there
Basketry. Woven fabric. Lace. Fur. Feathers. Feathered capes. Wooden sculpture. Objects that in any other mound on this continent would have been nothing but a stain in the soil a thousand years ago.
And alongside them, the durable material, in quantities that are difficult to absorb:
Roughly eight hundred engraved and unengraved marine shell cups. Thirteen thousand freshwater pearls. Large repoussé copper plates. Carved masks. Effigy pipes. Stone and wooden statuary. Shell gorgets engraved with the Birdman, with spiders, with human hands.
One archaeologist described how the chamber would have appeared when it was sealed: shimmering, and lush.
James A. Brown, who has spent a career on this material, produced the figure I opened with. Ninety percent of all known engraved shell and ritual artifacts from the Mississippian world came from this single site, and specifically from this mound.
The Kansas City Star in 1935 called it the King Tut of the Arkansas Valley.
They undersold it. Tutankhamun’s tomb was excavated across ten years by trained archaeologists with the world’s press watching and the Egyptian government supervising.
This one was opened by four men who needed money.
Why it was there
Here is the part that changes the emotional weight of everything that follows, and it took me a while to find it.
The Great Mortuary was not simply a tomb that accumulated over time. The reading of the deposit is that Spiro’s priests filled the existing burial mound with the community’s most precious objects (the capes, the axes, the rare minerals) as an offering.
To bring back the seasonal rains.
They were not hoarding treasure. They were giving it up.
At what must have been the worst moment their world had faced, a drought that threatened everything, the people at Spiro gathered the most beautiful and valuable things they possessed, carried them into a cedar chamber, and put them into the ground. They gave away their wealth in the hope that it would be enough.
Six hundred years later, four men dug it up and sold it.
Nineteen thirty-three
The land had been farmed since the 1870s by Choctaw and Chickasaw Freedmen; people who had themselves been enslaved by the Five Tribes and then made citizens of those nations after the Civil War, and who ended up on this ground through the long machinery of allotment.
For years the owners had discouraged digging. People knew there was something in that mound; local pot-hunting had been going on in the region for a long time.
But it was 1933, at the bottom of the Depression, in eastern Oklahoma, in the dust years. Money was money.
They leased Craig Mound to a group of local men, and those men had given themselves a name that tells you precisely how they understood what they were about to do.
The Pocola Mining Company.
Mining. Not excavation. Not archaeology. Not even treasure hunting, which at least implies a romance about it. Extraction. A commodity in the ground and a company formed to remove it.
Three hundred dollars.
And in 1933, the State of Oklahoma had no law that said they couldn’t.
What they took, and what they dropped
They tunneled in. They found the chamber. And for two years they pulled out everything with a market.
Copper plates. Shell cups. Pipes. Statuary. Pearls. Anything that could be crated, shipped, and sold which it was, by mail order, to collectors across the country and eventually around the world. More than ten thousand objects left that mound.
And the textiles?
They threw them on the ground.
The feathered capes. The woven fabric. The lace. The fur. The basketry. The cedar poles of the chamber itself.
The only surviving examples, anywhere, of six hundred years of a people’s weaving. The one place on this continent where that material had come through. No resale value in 1933, so it went into the dirt to be walked on.
Forrest E. Clements, who headed the anthropology department at the University of Oklahoma, described the site afterward. Sections of cedar pole scattered across the ground. Fragments of feather and fur textile littering the whole area. He wrote that it was impossible to take a single step, anywhere within hundreds of square yards of the ruined chamber, without scuffing broken pottery, fragments of engraved shell, and beads of shell, stone, and bone.
Hundreds of square yards. You could not put your foot down.
I want to be exact about the nature of this loss, because it is easy to blur.
The objects they sold are a catastrophe severed from their context, their position in the chamber, their relationship to each other and to the people they were buried with. All of that information is destroyed and cannot be recovered. But the objects themselves still exist. Most of them are somewhere in the world, in a case or a drawer or a box in an attic.
The things they threw away do not exist. Not damaged. Not scattered. Not in a private collection waiting to be found.
Gone.
They destroyed what was irreplaceable and kept what was merely valuable, because they could not tell the difference.
Six hundred people
There is one more number from those two years.
More than six hundred complete or partial human burials were disturbed in Craig Mound.
Tunneled through, moved, broken up, with no record of who was where, what was buried with whom, or in what arrangement. In archaeological terms that is the total destruction of the mortuary record; everything the burials could have told us about who these people were, how they were ranked, what they believed happened after death.
In human terms it is six hundred graves opened by men looking for salable goods.
The law, and the dynamite
Word got out. Archaeologists began showing up at the site. Newspapers ran the story. Academics wrote letters. The Kansas City Star piece put it in front of a national audience.
And in 1935, the Oklahoma Legislature passed the state’s first antiquities law, drafted specifically to stop what was happening at Spiro.
The Pocola Mining Company ignored it.
They kept digging through the summer of 1935 while the legal machinery ground forward. By the time it caught them, roughly a third of Craig Mound had been destroyed.
In November 1935 they were finally shut down.
On their way out, they dynamited the chamber.
I want to sit on that for a moment, because it is the act that separates this from ordinary looting.
It served no purpose. There was nothing left to extract; they had already taken everything they could sell. It was not a digging technique. It was not carelessness or haste. Nobody blows up a hole they are finished with.
It was spite. If they could not have it, no one would.
That is the single clearest statement anyone has ever made about what the Mound Builder Myth was actually for and I’ll come back to that.
Forensics on a crime scene
From 1936 to 1941, University of Oklahoma archaeologists working with WPA crews excavated what remained. They mapped the twelve mounds. They went through the spoil, the tunnels, the blast debris. They interviewed people. They tried to trace where objects had gone.
Clements published his account of the aftermath in 1945.
What they were doing was not really excavation. It was reconstruction from wreckage trying to establish from fragments and secondhand accounts what had been in a chamber that no trained person ever saw intact.
Every interpretation of Spiro that exists rests on that salvage work, and on objects whose provenance had to be reconstructed after the fact from dealers and collectors.
Bear that in mind whenever you read a confident statement about what the Great Mortuary contained or how it was arranged. The confidence is hard-won and it is built on a ruin.
The thread back to Cahokia
Now the part I have been building toward across ten episodes.
Among the material taken from the Great Mortuary were engraved shell cups and gorgets in a distinctive style; flowing, confident line work depicting the Birdman, the layered cosmos, the figures that recur across the Mississippian world. Archaeologists call it Braden style.
For decades, Spiro was where Braden was best known, simply because Spiro had the most of it. The natural assumption was that it originated there.
Then archaeologists returned to Cahokia.
Mound 34 is a small platform mound about four hundred meters east of Monks Mound, on the Ramey plaza. Excavation there produced caches of whelk shell cups, engraved shell fragments, and fragments of repoussé copper plates and evidence of what has been described as a copper workshop.
The material at Mound 34 dates earlier than the material at Spiro.
The Braden style originated at Cahokia.
And it did not stop at Spiro. Pieces made at Cahokia were exported to the regional centers, where local craftsmen emulated them and developed their own schools:
The Craig style at Spiro, in Oklahoma. The Hightower style at Etowah, in Georgia. The Hemphill style at Moundville, in Alabama.
One source. Three regional traditions. A thousand miles apart.
Set that beside what you already have from this series. In episode one, fifteen million basket-loads of earth going up Monks Mound by hand. In episode three, Birdman copper plates coming out of Etowah in Georgia that trace back to Cahokia workshops five hundred miles away. And here, five hundred miles in the opposite direction, the same artistic tradition from the same origin.
These were not scattered villages that happened to build mounds and happened to develop similar art.
This was one world. A network of objects, ideas, materials, and people running from the Great Lakes to the Gulf and from Georgia to Oklahoma, operating for centuries, with a documented center and documented branches.
And the greatest surviving record of that world was opened by men who named their company after mining.
Where it all went
The objects from Craig Mound were sold to collectors throughout the world.
Museums and institutions have spent ninety years buying back, tracing, and cataloguing Spiro material. The Gilcrease Museum in Tulsa holds Craig style engraved shell. The Woolaroc holds the spider gorget. The Smithsonian holds a substantial portion. The 2021 exhibition Spiro and the Art of the Mississippian World assembled a great deal of it in one place for the first time since 1935.
But a significant amount has never been located.
Objects sit in private hands, in estates, in collections assembled decades ago by people now dead, whose heirs may have no idea what they are looking at or where it came from.
There is engraved shell from that chamber on somebody’s shelf right now.
And under the Native American Graves Protection and Repatriation Act, the human remains and associated funerary objects taken from Craig Mound are subject to repatriation to descendant nations; the Caddo Nation of Oklahoma and the Wichita and Affiliated Tribes, who are recognized as the cultural descendants of the people who built Spiro.
That process is still running, ninety years on, for material that should never have left the ground.
What the myth was for
I have ended every episode of this series with the same line: every conquered society gets its architecture reassigned.
Spiro is where you can see the mechanism working, in daylight, with a receipt.
Ask the obvious question. How does a group of men form a company, lease a burial mound containing six hundred human graves, tunnel into it, sell the contents by mail, and dynamite what’s left in 1933, in the United States, without anyone stopping them for two years?
Part of the answer is that Oklahoma had no antiquities law. But laws follow beliefs, and the belief was in place first.
The Mound Builder Myth held that the people who built these structures were a vanished race. Not Native Americans, someone else, someone gone, someone with no living descendants. That myth had been demolished in the professional literature by Cyrus Thomas in 1894, forty years earlier. But it survived in the culture, because it was useful.
If the builders were a vanished race with no descendants, then there is nobody to object. No community whose ancestors are being disturbed. No sacred site being desecrated. No crime being committed against anyone, because the anyone is extinct.
Just dirt on a farm, and a man who owns it, and three hundred dollars.
The myth is what made the receipt possible.
And the dynamite is what the myth looks like when it stops being an idea and becomes an action, the final assertion that this ground and everything in it belonged to whoever could reach it first, and to no one else at all.
The Caddo Nation is in Oklahoma. The Wichita and Affiliated Tribes are in Oklahoma. They were there in 1933. They are there now.
There was never a vanished race. There was only a story that made it cheaper to dig.
Four men paid three hundred dollars for a mound. Inside they found the only room in North America where the feathers survived a chamber that had held its air for six hundred years, filled with everything a people owned, buried as an offering to end a drought.
They sold what would sell. They threw the rest on the ground until you could not take a step without breaking something. Then they blew up the room.
Ninety percent of a civilization’s surviving art came out of that hole, and we will never know how it was arranged, who it was buried with, or what most of it looked like before it was walked on.
Every conquered society gets its architecture reassigned. And what does not get reassigned gets sold.
Ask yourself where else it’s happened.
There is a country buried underneath this one. And you’re standing on it right now.
GO LOOK FOR YOURSELF
The 2021 exhibition’s own account of the looting, from the institutions that spent decades reassembling the collection:
https://www.spiromounds.com/collection/archaeology-looting
Spiro Mounds Archaeological Center, Oklahoma Historical Society:
https://www.okhistory.org/
On Mound 34 at Cahokia, the copper workshop, and the dating that places Braden style at its origin:
https://en.wikipedia.org/wiki/Mound_34
James A. Brown and John Kelly’s technical work on the Craig Mound assemblage, the artifact-by-artifact catalogue:
https://www.academia.edu/3262518/Artifacts_from_the_Craig_Mound_at_Spiro_Oklahoma
The Past, on Spiro as one of the finds of the century:
https://the-past.com/welcome/this-week-spiro-mounds/
The descendant nations, in their own words: the Caddo Nation of Oklahoma and the Wichita and Affiliated Tribes are the cultural descendants of the people who built Spiro. If you read one thing from this list, make it something published by them rather than about them.
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