Many visitors to western Nebraska’s geoheritage sites will probably be “driving through” en route to more famous sites, such as Yellowstone, Grand Teton and Rocky Mountain national parks to the west or the Badlands and Mount Rushmore just to the north. But commercial air service is available directly into Scottsbluff, Neb., as well as Cheyenne, Wyo., and Denver, Colo. (about 160 and 320 kilometers away, respectively). A car is necessary to get around the area; you can rent one at any of these airports if you choose to fly in. If you’re driving through the area on Interstate 80, which runs from New York to San Francisco, you’ll pass through the Nebraskan panhandle.