Located on a Navajo Indian Reservation near the town of Page, Arizona, Antelope Canyon is made up of two distinct canyons: the Upper and the Lower. The result of millions of years of erosion, they are called slot canyons. These are immense, very narrow rock faults, having the particularity of being much deeper than they are wide. Both canyons can be visited, but what mainly differentiates them is their accessibility: Lower Antelope Canyon is longer, narrower and more difficult to access than its neighbor . If your heart is torn between the two, the ultimate guide to visiting Antelope Canyon (Upper & Lower) can help you make an informed choice.