Located just south of the geographic center of the United States, Oklahoma is equidistant from Los Angeles and New York City. The Great Plains state ranks 20th in size in the nation and exemplifies 11 distinct ecological regions, with terrain including flat, fertile plains, sand dunes, high mesas, dense forests, cypress swamps, rolling hills, and mountains covered in rock or trees.
Black Mesa, the highest elevation in the state, stands 4,973 feet above sea level in the far northwest; the lowest elevation, 289 feet, is located near Idabel in the extreme southeast. Oil and natural gas wells can be seen throughout much of the state. Oklahoma plains also host large herds of cattle and vast wheat fields.