Once a shallow inland sea covered this land. Silt and clay deposits gradually built up the sea floor. The upper elevations are flat top buttes seen on the horizon in all directions, the only remnants of the original sea floor. Eons of natural erosion exposed the silt and clay deposits, which weathered into rich agricultural soil. The current landscape is 150-200 feet below the old sea floor. Broad ridges extend from northwest to southeast separating creeks that carry rainwater 10 miles north to the White River, which empties into the Missouri River 37 miles east.
The ridges are natural attractions to upland game birds, Ringneck Pheasants and Grouse.