Lake Shelbyville, Illinois, USA June 1996 The plains of central Illinois, which is part of the great Corn Belt, are covered by an abundance of cultivated fields (represented by different shades of reds, grays, and lighter colors in this color infrared image) covering the entire view. The large, dark serpentine-shaped feature along the southeast corner of the picture is Lake Shelbyville. Lake Decatur is another sizable, elongated (dark) feature along the northern edge of the image. The much smaller dark feature in the southwest corner of the scene is Lake Taylorville. The urban, built up area of Decatur is visible immediately west of Lake Decatur and the intersecting runways of Decatur Municipal Airport are located east of the lake. Most of Interstate Highway 72 (thin, light line) is visible as it skirts around the north and west side of Decatur. Several state and U. S. highways are also visible as they radiate outward from the southern limits of Decatur