Plum Bayou Mounds Archeological State Park
🏆 Official Guide: Plum Bayou Mounds Archeological State Park — Formerly “Toltec Mounds” — Arkansas’s largest and most complex Native American mound site, a National Historic Landmark in Lonoke County featuring 18 ceremonial mounds (tallest: 49 ft) built by the Plum Bayou culture (AD 650–1050), interpretive trails, a visitor center with research laboratory, and solstice-aligned architecture.
Plum Bayou Mounds Archeological State Park preserves one of the most significant pre-Columbian sites in North America. The 18 mounds — arranged around two open plazas and aligned to solar events — were built by the Plum Bayou culture roughly 1,000 years ago as a ceremonial and governmental center. Renamed in 2022 from “Toltec Mounds” to honor the actual indigenous culture that built the site.
Visitor Information
| Detail | Information |
|---|---|
| Location | 490 Toltec Mounds Rd, Scott, AR |
| Designation | National Historic Landmark |
| Culture | Plum Bayou — AD 650 to 1050 |
| Mounds | 18 original — tallest is 49 feet |
| Visitor Center | Exhibits, research lab, gift shop |
| Renamed | November 2022 — from “Toltec Mounds” |
Key Features
| Feature | Details |
|---|---|
| Ceremonial Mounds | 18 mounds in two plazas — religious, political, ceremonial |
| Solar Alignments | Mounds aligned to solstices + equinoxes |
| Knapp Trail | Interpretive trail through mound complex |
| Plum Bayou Trail | Additional walking path with educational signage |
| Visitor Center | Artifacts, exhibits, archeological research laboratory |
| Special Events | Solstice/equinox celebrations, Archeology Month |
Frequently Asked Questions
Why was the park renamed?
The park was renamed from “Toltec Mounds” to “Plum Bayou Mounds” in November 2022. The original name was based on a 19th-century misconception that the Toltec people of Mexico built the mounds. Research has long established that the mounds were built by the indigenous Plum Bayou culture, and the name change honors the actual builders.
Can you climb the mounds?
Visitors should stay on designated trails and walkways to protect these irreplaceable archeological structures. The interpretive trails provide excellent views of the mounds from ground level, and the visitor center offers context through exhibits and artifacts.
