Important Bird Area.
Stone State Park is located in the bluffs and ravines adjacent to the Big Sioux River. The park consists of 1,069 acres in Woodbury and Plymouth Counties near Sioux City, and overlooks the South Dakota-Iowa border.

Main Entrance: Start Point: I-29 Exit 149. Proceed NORTH on Hamilton Blvd for ~ 2.3 miles to Stone Park Blvd. Take slight left (NORTHWEST) and proceed .4 miles and take a slight left onto Memorial Dr. Proceed 1mile and then proceed west into the park. West Entrance: Start Point: I-29 Exit 151. From Exit 151 proceed NORTH on IA12-S (a.k.a. Riverside Blvd). Proceed 4,4 mi on IA 12-S. Park entry will be on your right (EAST). Woodlands, some grasslands and small amounts of wetlands. Excellent birding year round.