About Plum Bayou Mounds Archeological State Park
Plum Bayou Mounds Archeological State Park preserves Arkansas's largest and most complex prehistoric mound site, a ceremonial landscape created by the people archaeologists call the Plum Bayou culture. The community used the site primarily for ceremonial and religious purposes from roughly A.D. 700 to 1050, constructing monumental earthworks and plazas that remain among the state's most important Indigenous archeological resources. Formerly called Toltec Mounds, the park was renamed in 2022 to better reflect the culture responsible for the site.
Visitors can explore the mounds on the barrier-free Knapp Trail or the longer Plum Bayou Trail, then examine artifacts and interpretation in the visitor center. The park shares space with an Arkansas Archeological Survey research station and laboratory, so a visit also shows how ongoing scientific work continues to refine understanding of the site; guided programs can be arranged in advance.
The park is especially rewarding because the earthworks are not isolated museum objects but a surviving cultural landscape whose scale and setting can only be fully appreciated on foot. Its combination of preserved archaeology, active research, and accessible trails makes it one of the strongest places in Arkansas to encounter pre-European history directly.
