Ocmulgee Mounds National Historical Park in Macon, Georgia, United States preserves traces of over ten millennia of culture from the Indigenous peoples of the Southeastern Woodlands. Its chief remains are major earthworks built before 1000 CE by the South Appalachian Mississippian culture These include the Great Temple and other ceremonial mounds, a burial mound, and defensive trenches. They represented highly skilled engineering techniques and soil knowledge, and the organization of many laborers. The site has evidence of "12,000 years of continuous human habitation." The 3,336-acre (13.50 km2) park is located on the east bank of the Ocmulgee River. Macon, Georgia developed around the site after the United States built Fort Benjamin Hawkins nearby in 1806 to support trading with Native Americans.