Roof Butte, in Arizona, is the highest peak of the Chuska Mountains along the Arizona–New Mexico border. Known in Navajo as Adáá dikʼá, or “Roof shaped mountain on the run,” it reaches 9,787 feet and is visible for miles as a prominent butte. Its broad, relatively flat summit was created by two funnel-shaped volcanic explosion pipes, and a nearby peak is capped by a low lava dome. The mountain combines striking geologic features with present-day function, as a staffed lookout tower occupies its summit.