"They'd engrave a shell they'd get from the Atlantic Ocean or Gulf of Mexico," Crabtree said. "Authentic gorget are very rare. Just a handful were found in New Madrid County and Mississippi County.

The Iva site contained a rare effigy mound and Middle Mississippian (Ramey horizon) component within the Late Woodland Lewis phase territory of the Upper Mississippi River valley. Salvage excavations ...

They can also learn "chunky," an early Native American game and also make modern reproductions of gorget, or a hand-carved shell necklaces.