Nearly four miles long, the Rock Island Old Stone Arch Nature Trail runs along what once was a railbed. The trail is mostly in Shelby County but extends into Pottawattamie County with a trailhead near the Shelby exit on Interstate 80.
The trail runs through a variety of scenery, including creeks, wetlands, woods, and prairies.
Parking is available at all three trailheads, including the trailhead beginning in Pottawattamie County.
