1. High Plains: The most common feature, these are broad, relatively flat areas characterized by grasslands and some rolling hills.
2. Mesas and Canyons: While not as extensive as the plains, mesas (flat-topped hills) and canyons are found in the area, especially in the Palo Duro Canyon State Park.
3. Dry washes and arroyos: These are dry streambeds that can rapidly fill with water during storms, creating temporary channels.
4. Sandhills: Some areas near the Canadian River may have dunes or sandhills, though they are not as prevalent as in other parts of the region.
It's important to note that Amarillo doesn't have significant mountains, forests, or coastal features. Its landscape is primarily defined by the vast, flat plains and the occasional mesas and canyons that break up the monotony.