Mound Builders. Earliest Inhabitants. Mound Builders. During the late prehistoric period (approx. 700 to 1200 CE), groups of people from Georgia to Oklahoma and Minnesota to Texas built mounds ceremonial purposes, including burying their dead
One of the largest known prehistoric cemeteries in North America is sited at Spiro, with more than 750 burials dated between 850-1450 CE. It has at least 15 mounds and a village of rectangular houses.
During the 1930s, excavations found grave goods found at Spiro
The village around Spiro’s mound center grew but the center did not; by 1450 the population moved on