Explore a geologic oddity – Crowley’s Ridge – at Morris State Park. The ridge rises 200 feet above the Mississippi River’s floodplain and consists of a strip of low hills ranging from a half-mile to five or more miles wide. The park, which was donated to the state by Jim D. Morris, consists of unusual soil types and rare plant species. A 2.25-mile loop trail extends through a portion of the ridge and allows visitors to see just how powerful erosion can be.