Mushroom Rock State Park in the Smoky Hills of north-central Kansas is a five-acre site known for rock formations shaped like giant mushrooms. Though the smallest state park in Kansas, it has become one of the state’s best-known geological landmarks and is recognized as one of the eight wonders of Kansas geography. Its distinctive pedestal forms developed from Cretaceous beach sands and other sediments that were naturally cemented, then sculpted by erosion at uneven rates. The park includes two especially prominent mushroom rocks, a large shoe rock, and other weathered outcrops. The rocks also once served as a meeting place for pioneers and Native Americans.