Generally consisting of Apache, Coconino, Mohave, Navajo, and Yavapai counties, the region is geographically dominated by the Colorado Plateau, the southern border of which in Arizona is called the Mogollon Rim.
In the north-east are large Hopi and Navajo reservations, parts of which overlap, leading to occasional territorial disputes.
The area is known for its variety of outdoor recreation opportunities, hiking trails and forest service roads, extreme topographical and environmental variability, and its geologic and human history.
Some notable towns there are St. Johns, Eagar, Holbrook, Show Low, Winslow, Window Rock, Fort Defiance, Ganado, Chinle, and Kayenta.
Northeast Arizona is arid, largely free of greenery, and characterized by hills, mesas, buttes, cliffs, and canyons.
The windy stony plains of the Petrified Forest National Park exhibits parts of the barren colorful Painted Desert as well as preserved Native American petroglyphs.