A very distinctive phenomenon in southeast Missouri known as Crowley's Ridge is the predominant feature of Morris State Park. The ridge, which extends well beyond the park boundaries, stands on average about 200 feet above the Mississippi River delta floodplain and consists of a strip of low hills from about one-half to five or more miles wide. Crowley's Ridge consists of unusual soil types and rare plant species. Morris State Park was donated to the state by Jim D. Morris to assist in the preservation of this unique natural and geologic feature. The 161-acre park is a feature along Crowley's Ridge Parkway, a scenic byway consisting of a 42-mile route that starts at the Dunklin-Stoddard County line on Highway 25 and runs south to Malden. Morris State Park is one of many sites that can be visited along the parkway that portrays the natural, cultural or historical significance of the area. The park offers a two-mile loop trail that extends through a large portion of Crowley's Ridge, taking visitors to the lowest point of the park. The trail also passes near the park's predominant geologic feature, a very large soil exposure, which depicts the natural erosion of the alluvial soil. A restroom, parking area and interpretive kiosks are available at the park.