Seidner Dune and Swale, a dedicated Indiana state nature preserve, protects globally rare dune-and-swale topography and floodplain marsh along a beautifully restored section of the Grand Calumet River. Rescued from surrounding heavy industry and noisy highways, the black oak savanna, prairie, and wetlands communities here feature impressive wildflower displays in the spring, summer and fall. Egrets and herons frequent the river and the wetlands. Waterfowl can be seen on the river throughout the year. Hawks, bald eagles, and falcons hunt from high overhead, and aquatic mammals and turtles are increasing in number.
The preserve can be accessed from Kennedy Avenue via an access road immediately north of the Indiana Toll Road. Heading east from Kennedy Avenue, parking is available at a bend in the road. Walk through the gate onto the gravel road leading east.