Directions From Opelousas 5 miles east on US 190. Phone (337) 585-0853 Activities BOATING, HISTORIC & CULTURAL SITE, HIKING, OFF HIGHWAY VEHICLE, PICNICKING, WATER SPORTS, WILDLIFE VIEWING, ENVIRONMENTAL EDUCATION Camping Reservations Reserve your campsite at these camping areas: Louisiana Campgrounds Hiking Trails Looking for nice hiking areas to take a hike? Choose from these scenic hiking trails: Louisiana Hiking Trails Related Link(s) More Louisiana Recreation Areas Atchafalaya Basin Website The project encompasses 595,000 acres of the largest contiguous tract of bottomland hardwoods in the United States. The Atchafalaya Basin is a scenic semi-wilderness area of hardwood forests, cypress stands, marshes and bayous. It is one of the last great river swamps left in the nation. The Atchafalaya River and hundreds of miles of bayous bring life to this wilderness area.