Explore one of Oklahoma’s wildest ancient sites. Spiro Mounds was a major Caddoan Mississippian city from A.D. 800 to A.D. 1450, and the artifacts found here connect Oklahoma to the Great Lakes, the Gulf Coast, and even ancient Mexico. Craig Mound alone held more than 13,000 items including copper plates, engraved shells, stone blades, and preserved feathered capes. This place is called an American King Tut’s Tomb for a reason. If you love Oklahoma history or hidden spots with real depth, Spiro