Chaistla Butte is a 6,098-foot volcanic plug on Navajo Nation land in northeastern Arizona, rising about 400 feet above Little Capitan Valley near Kayenta and south of Monument Valley. Part of the Navajo Volcanic Field, it formed around 30 million years ago as a diatreme with related igneous flows emerging from the older Chinle Formation. Visible from Highway 163, it helps define the high-desert landscape alongside nearby landmarks such as Agathla Peak and Owl Rock. The butte also holds cultural importance: officially named Chaistla in 1915 and also called Turkey Butte, its Navajo name carries meanings linked to beavers and to supporting the sky’s underside.