Monks Mound is the largest Pre-Columbian earthwork in the Americas and the largest pyramid north of Mesoamerica. The beginning of its construction dates from 900–955 CE. Located at the Cahokia Mounds UNESCO World Heritage Site near Collinsville, Illinois, the mound size was calculated in 1988 as about 100 feet high, 955 feet long including the access ramp at the southern end, and 775 feet wide. This makes Monks Mound roughly the same size at its base as the Great Pyramid of Giza. The perimeter of its base is larger than the Pyramid of the Sun at Teotihuacan. As a platform mound, the earthwork supported a wooden structure on the summit.
Crooks Mound is a large Marksville culture archaeological site located in La Salle Parish in south central Louisiana. It is a large, conical burial mound that was part of at least six episodes of burials. It measured about 16 ft high (4.9 m) and 85 ft wide (26 m). It contained roughly 1,150 sets of remains that were placed. However, they were able to be fit into the structure of the mound. Sometimes body parts were removed in order to achieve that goal. Archaeologists think it was a holding house for the area that was emptied periodically in order to achieve this type of setup.
The Plaquemine culture was an archaeological culture centered on the Lower Mississippi River valley. It had a deep history in the area stretching back through the earlier Coles Creek and Troyville cultures to the Marksville culture. The Natchez and related Taensa peoples were their historic period descendants. The type site for the culture is the Medora Site in Louisiana; while other examples include the Anna, Emerald, Holly Bluff, and Winterville sites in Mississippi.
The Medora Site (16WBR1) is an archaeological site that is a type site for the prehistoric Plaquemine culture period. The name for the culture is taken from the proximity of Medora to the town of Plaquemine, Louisiana. The site is in West Baton Rouge Parish, Louisiana, and was inhabited from approximately 1300 to 1600 CE. It consisted of two mounds separated by a plaza. In the winter of 1939-40 excavation of this site was undertaken by the Louisiana State Archaeological Survey, a joint project of Louisiana State University and the Work Projects Administration. It was directed by James A. Ford, and George I. Quimby. The excavations of the site were instrumental in defining the characteristics of the Plaquemine period and culture.
Poverty Point State Historic Site/Poverty Point National Monument is a prehistoric earthwork constructed by the Poverty Point culture. The Poverty Point site is located in present-day northeastern Louisiana though evidence of the Poverty Point culture extends throughout much of the Southeastern Woodlands. The culture extended 100 miles (160 km) across the Mississippi Delta and south to the Gulf Coast. The Poverty Point site has been designated as a state historic site, U.S. National Monument, a U.S. National Historic Landmark, and UNESCO World Heritage Site. Located in the Southern United States, the site is 15.5 miles (24.9 km) from the current flow of the Mississippi River, and is situated on the edge of Macon Ridge, near the village of Epps in West Carroll Parish, Louisiana.
Frogmore Mound Site is an archaeological site of the Late Coles Creek culture in Concordia Parish, Louisiana. The site is located 7 miles (11 km) west of Ferriday on US 84. It was added to the National Register of Historic Places on July 28, 2004.
Filhiol Mound Site is an archaeological site of the Coles Creek culture in Ouachita Parish, Louisiana on a natural levee of the Ouachita River.
Peck Mounds is an archaeological site of the Late Troyville-Early Coles Creek culture in Catahoula Parish, Louisiana.
Ghost Site Mounds is an archaeological site in Tensas Parish, Louisiana with an Early to Middle Coles Creek culture component and a Late Coles Creek to Plaquemine culture component.
Fitzhugh Mounds is an archaeological site in Madison Parish, Louisiana from the Plaquemine\Mississippian period dating to approximately 1200–1541 CE. It is the type site for the Fitzhugh Phase(1350-1500) of the Tensas Basin Plaquemine Mississippian chronology.
Wade Landing Mound is an archaeological site of the Coles Creek culture in Caldwell Parish, Louisiana.
Venable Mound is an archaeological site in Morehouse Parish, Louisiana with a single mound with components from the Troyville, Coles Creek and Plaquemine period.
Deprato Mounds, also known as the Ferriday Mounds, is a multi-mound archaeological site located in Concordia Parish, Louisiana. The site shows occupation from the Troyville period to the Middle Coles Creek period. The largest mound at the site has been dated by radiocarbon analysis and decorated pottery to about 600 CE.
The Raffman Site is an archaeological site located in Madison Parish, Louisiana and constructed between 700 and 1200 CE. It has components from the Tchefuncte culture and the Coles Creek culture, whose main period of occupation was during the Balmoral Phase(1000-1100 CE) of the Tensas Basin and Natchez Bluffs chronology and which was virtually deserted by the end of the Preston Phase .
Transylvania Mounds is an archaeological site in East Carroll Parish, Louisiana with components from the Coles Creek (700–1200)CE and Plaquemine/Mississippi periods (1200–1541). It is the type site for the Transylvania Phase of the Tensas Basin Plaquemine Mississippian chronology.
Sundown Mounds is an multimound archaeological site in Tensas Parish, Louisiana from the Early Coles Creek culture. It is the type site for the Sundown Phase of the Tensas Basin and Natchez Bluff Coles Creek chronology.
Flowery Mound is an archaeological site in Tensas Parish, Louisiana with components from the Late Coles Creek and Plaquemine-Mississippian culture which dates from approximately 950–1541.
Marsden Mounds is an archaeological site with components from the Poverty Point culture and the Troyville-Coles Creek period. It is located in Richland Parish, Louisiana, near Delhi. It was added to the NRHP on August 4, 2004, as NRIS number 04000803. It is the type site for the Marsden Phase of the Tensas Basin and Natchez Bluff regions local chronology.
Julice Mound is an archaeological site in East Carroll Parish, Louisiana with a Plaquemine culture component dating to 1200–1541 CE and located less than one mile from Transylvania Mounds.
The Atchafalaya Basin Mounds is an archaeological site originally occupied by peoples of the Coastal Coles Creek and Plaquemine cultures beginning around 980 CE, and by their presumed historic period descendants, the Chitimacha, during the 18th century. It is located in St. Mary Parish, Louisiana on the northern bank of Bayou Teche at its confluence with the Lower Atchafalaya River. It consists of several earthen platform mounds and a shell midden situated around a central plaza. The site was visited by Clarence Bloomfield Moore in 1913.
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