#11 on the Kanopolis Lake Legacy Trail tour. From K-140, 2 miles south on K-141, then 2 miles west on K. These mushroom-shaped rocks are a geologic phenomenon of sandstone spheres. Two are balanced on a stone “mushroom stem!” They likely served as meeting places and landmarks for American Indians and early pioneers. Cross the footbridge and to the east find the rock bearing an etching of the U.S. flag. (8 Wonders of Kansas - Geography)