Plaquemine Mississippian culture

The Plaquemine culture was an archaeological culture in the lower Mississippi River Valley in western Mississippi and eastern Louisiana. Good examples of this culture are the Medora Site (the type site for the culture and period) in West Baton Rouge Parish, Louisiana, and the Anna, Emerald Mound, Winterville and Holly Bluff sites located in Mississippi. Plaquemine culture was contemporaneous with the Middle Mississippian culture in the Cahokia site in St. Louis, Missouri. It is considered ancestral to the Natchez and Taensa peoples.

The Plaquemine Culture occupied the rest of Louisiana not taken by the Caddoan Mississippian culture during this time frame. Its people are considered descendants of the Troyville-Coles Creek culture. A prominent feature of Plaquemine sites are large ceremonial centers with two or more large mounds facing an open plaza. The flat-topped, pyramidal mounds were constructed in several stages. Sometimes they were topped by one or two smaller mounds. Mounds were often built on top of the ruins of a house or temple and similar buildings were usually constructed on top of the mound.

In earlier times, buildings were usually circular, but later they were likely to be rectangular. They were constructed of wattle and daub, and sometimes with wall posts sunk into foot-deep wall trenches. At times, shallow, oval or rectangular graves were dug in the mounds. These might have been for primary burials, but more often they were for the reburial of remains originally interred elsewhere.

...
Wikipedia