The westernmost great Mississippian centre, where Caddoan leaders amassed a 'Great Mortuary' of engraved shell, copper and textiles in the hollow Craig Mound.
Residents dispersed to nearby villages after ~1250 while Spiro endured as a sacred mortuary until ~1450, when ceremonial use finally ceased.
The atlas holds 2 border frames for Spiro — the shape you scrub through changes in 850 · 1251.
The major archaeological report on Spiro and the Craig Mound Great Mortuary.
A narrative history of Spiro, its mortuary treasures, and their plundering.