Spiro Mounds

Common card · No. 419133

Spiro Mounds (34 LF 40) is an Indigenous archaeological site located in present-day eastern Oklahoma. The site was built by people from the Arkansas Valley Caddoan culture that was part of the Mississippian culture. The 150-acre site is located within a floodplain on the southern side of the Arkansas River. The modern town of Spiro developed approximately seven miles to the south. Between the 9th and 15th centuries, the local Indigenous people created a religious and political center, culturally linked to the Southeastern Ceremonial Complex identified by anthropologists as the Mississippian Ideological Interaction Sphere (MIIS). Spiro was one of four regional centers used by the Caddoan Mississippian culture. These four centers were Cahokia, located in present-day East St. Louis, Moundville, in present-day Alabama, Etowah, in present-day Georgia, and Spiro. Spiro was a major western outpost of Mississippian culture which dominated the Mississippi Valley and its tributaries for centuries...

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