2022, after negotiations headed by the Open Space Institute halted incompatible industrial development adjacent to the park; under the same deal, an additional 45 acres were transferred to the Ocmulgee Land Trust while wetlands restoration occurs, and will be transferred to the park at a later date. In the early 1990s, the National Park Service renovated its facilities at the park. In 1997, it designated the Ocmulgee National Monument as a Traditional Cultural Property, the first such site named east of the Mississippi River. Ocmulgee's visitor center includes an archaeology museum. It displays artifacts and interprets the successive cultures of the prehistoric Native Americans who inhabited this site for thousands of years. In addition, it interprets the historic Muscogee Creek tribe and diverse peoples who settled nearby in the colonial era. The visitor center includes a short orientation film for the site. Its gift shop has a variety of craft goods, and books related to the park. The large park encompasses , and has of walking trails. Near the visitor center is a reconstructed ceremonial earthlodge, based on a 1,000-year-old structure excavated by archeologists. Visitors can reach the Great Temple Mound via a half-mile walk or the park road. Other surviving prehistoric features in the park include a burial mound, platform mounds, and earthwork trenches. The historic site of the English colonial trading post at Ocumulgee, when they were allied with the Muscogee, is also part of the park. It was discovered during archeological excavations in the 1930s. The main section of Ocmulgee Mounds National Historical Park is accessible from U.S. Route 80, off Interstate 16 (which passes through the southwest edge of the park). It is open daily except Christmas Day and New Year's Day. The Lamar Mounds and Village Site is an isolated unit of the park, located in the swamps about south of Macon. The Lamar Site is open on a limited basis. The NPS is conducting a Special Resource Study on the Ocmulgee River Corridor, which may recommend expansion of the area as a national park and preserve. The study area includes parts of Bond Swamp National Wildlife Refuge, Robins Air Force Base, and three Georgia state wildlife management areas. The Muscogee Nation may be a partner in conservation management. History Macon Plateau culture Ocmulgee (pronounced "oak-mull-ghee") is a memorial to ancient indigenous peoples in Southeastern North America. From Ice Age hunters to the Muscogee Creek