Information By Ryan / September 16, 2015 Antelope Canyon is one of the most photographed canyons of the American Southwest. It was formed by erosion of the local Navajo sandstone. Antelope Canyon is a popular location for photographers and sightseers, and a source of tourism business for the Navajo Nation. Private tour companies have been permitted to offer tours since 1987. It has been accessible by tour only since 1997, when the Navajo Tribe made it a Navajo Tribal Park.