Perhaps the most famous of all slot canyons, Antelope Canyon is found near Page, Arizona. There are two separate sections, known as Upper Antelope Canyon and Lower Antelope Canyon, or more affectionately, The Crack and The Corkscrew. Formed by the erosion of sandstone from flash flooding and other processes, the slot canyons have curvaceous, strangely angled walls. The beautiful colors, textures, curves and spectacular lighting — particularly during the summer months — are a major draw for photographers and sightseers. They are located within the LeChee Chapter of the Navajo Nation and have become a significant source of tourism for the Navajo tribe.