Situated on Navajo land in the Lake Powell Navajo Tribal Park, Arizona, Antelope Canyon is one of the most-photographed slot canyons in the United States. Formed by water rushing through the rock over the course of millions of years, this natural wonder has two separate sections—the deep-but-narrow Upper Antelope Canyon (also known as Spiral Rock Arches) and the Lower Antelope Canyon (Hasdeztwazi).