An archeological site that contains mostly of remains from the Plaquemine Mississippian period, the Emerald Mound Site is a National Historic Landmark as per declaration in 1989. Evidence show that the site dates from 1200 to 1730 AD and was used by the Natchez as a primary ceremonial venue.

The Emerald Mound Site is the home of the second-largest Pre-Columbian earthwork in the United States. It measures 35 feet in height and 770 by 435 feet at its base. The mound also has two smaller secondary mounds on each end, the last remaining of the many that used to exist according to 19th century documents.

The Emerald Mound Site got its name from the nearby antebellum plantation. It was first excavated in 1838 where they?ve recovered a series of skeletons, tools, stratigraphy, and pottery.