LA State Arboretum State Preservation Area
“The Arboretum is more than 600 acres of natural growth, embellished with additional plantings of species that are indigenous to the state. ….The landscape ranges from nearly flat along the Walker Branch of Lake Chicot to relatively steep slopes along the terrace ridges. …. almost every type of Louisiana vegetation, except coastal marsh and prairie, is represented on the site.”
Picnic grounds and camping facilities are available at nearby Chicot State Park.
Here is the Area website. Phone (888)677-6100 or 337-363-6289 Trail map
The LA Parks facilities chart show that there are ADA wheelchair accessible walking trails in the park.