Light Beam in Upper Antelope Slot Canyon.  Thin shafts of light briefly penetrate the convoluted narrows of Upper Antelope Slot Canyon, sending piercing beams through the sandstone maze to the sand floor below, Navajo Tribal Lands, Page, Arizona

Light Beam In Upper Antelope Slot Canyon, Navajo Tribal Lands

A hiker admiring the striated walls and dramatic light within Antelope Canyon, a deep narrow slot canyon formed by water and wind erosion, Navajo Tribal Lands, Page, Arizona

A hiker admiring the striated walls and dramatic light within Antelope Canyon, a deep narrow slot canyon formed by water and wind erosion.

Light Beam in Upper Antelope Slot Canyon.  Thin shafts of light briefly penetrate the convoluted narrows of Upper Antelope Slot Canyon, sending piercing beams through the sandstone maze to the sand floor below, Navajo Tribal Lands, Page, Arizona

Light Beam In Upper Antelope Slot Canyon, Navajo Tribal Lands

Slot canyons are formed when water and wind erode a cut through a (usually sandstone) mesa, producing a very narrow passage that may be as slim as a few feet and a hundred feet or more in height. The Upper Antelope Slot Canyon is likely the world's most well-known slot canyon, having appearing in films, television commercials and thousands of published photographs. The sandstone striations, wildly curving walls, ethereal light and tortured twisting passages that characterize Upper Antelope Canyon draw visitors and photographers year round, to the point that the canyon becomes jammed with people in the hot hot hot summertime. Normally the Antelope Canyon slot canyons are dry and sandy, but flash floods form suddenly, transforming the slot canyon in minutes into a roiling, water-filled trap in rainy weather. Tragically, in 1997 a flash flood in the lower Antelope Canyon slot canyon killed eleven people of a party of twelve. Both the upper and less-visited lower slot canyons in Antelope Canyon are accessible only through permit and are located on LaChee Navajo tribal lands near Page, Arizona.

A hiker admiring the striated walls and dramatic light within Antelope Canyon, a deep narrow slot canyon formed by water and wind erosion, Navajo Tribal Lands, Page, Arizona

Antelope Canyon, slot canyon exploring and hiking, canyoneering.

Light Beam in Upper Antelope Slot Canyon.  Thin shafts of light briefly penetrate the convoluted narrows of Upper Antelope Slot Canyon, sending piercing beams through the sandstone maze to the sand floor below, Navajo Tribal Lands, Page, Arizona

Light Beam In Upper Antelope Slot Canyon, Navajo Tribal Lands

Upper Antelope Canyon slot canyon, Navajo Tribal Lands, Page, Arizona

Fantastic light in Upper Antelope Slot Canyon, Arizona.

Light Beam in Upper Antelope Slot Canyon.  Thin shafts of light briefly penetrate the convoluted narrows of Upper Antelope Slot Canyon, sending piercing beams through the sandstone maze to the sand floor below, Navajo Tribal Lands, Page, Arizona

Light Beam In Upper Antelope Slot Canyon, Navajo Tribal Lands

Light beam in Upper Antelope Canyon slot canyon, Navajo Tribal Lands, Page, Arizona

Light beam in Antelope Canyon.

Lower Antelope Canyon, a deep, narrow and spectacular slot canyon lying on Navajo Tribal lands near Page, Arizona, Navajo Tribal Lands

Lower Antelope Canyon, Navajo Tribal Lands

Canyoneering, hiking and exploring in Antelope Canyon slot canyon, Navajo Tribal Lands, Page, Arizona

Admiring the light, Upper Antelope Canyon, Arizona.

Lower Antelope Canyon, a deep, narrow and spectacular slot canyon lying on Navajo Tribal lands near Page, Arizona, Navajo Tribal Lands

Lower Antelope Canyon, a deep, narrow and spectacular slot canyon lying on Navajo Tribal lands near Page, Arizona.

Lower Antelope Canyon, a deep, narrow and spectacular slot canyon lying on Navajo Tribal lands near Page, Arizona, Navajo Tribal Lands

Slot canyons are formed when water and wind erode a cut through a (usually sandstone) mesa. Lower Antelope Canyon, Arizona.

Upper Antelope Canyon slot canyon, Navajo Tribal Lands, Page, Arizona

Slot Canyon Light beams, Antelope Canyon, Arizona.

Lower Antelope Canyon, a deep, narrow and spectacular slot canyon lying on Navajo Tribal lands near Page, Arizona, Navajo Tribal Lands

Hiking and photographing, Lower Antelope Canyon, Page, Arizona.

Upper Antelope Canyon slot canyon, Navajo Tribal Lands, Page, Arizona

iPhone photography, Arizona slot canyon.

Lower Antelope Canyon, a deep, narrow and spectacular slot canyon lying on Navajo Tribal lands near Page, Arizona, Navajo Tribal Lands

Lower Antelope Canyon, Navajo Tribal Lands

Antelope Canyon, a deep narrow slot canyon formed by water and wind erosion, Navajo Tribal Lands, Page, Arizona

Upper Antelope Canyon Slot Canyon, Navajo Tribal Lands

A hiker admiring the striated walls and dramatic light within Antelope Canyon, a deep narrow slot canyon formed by water and wind erosion, Navajo Tribal Lands, Page, Arizona

Inside the entrance to Antelope Canyon Slot Canyon, striated walls and light beams, Page, Arizona.

Antelope Canyon, a deep narrow slot canyon formed by water and wind erosion, Navajo Tribal Lands, Page, Arizona

Empty slot, Antelope Canyon, Arizona.

Antelope Canyon, a deep narrow slot canyon formed by water and wind erosion, Navajo Tribal Lands, Page, Arizona

Scalloped walls and striated sandstone, water erosion, deep narrow slot canyon, Southwest.

Antelope Canyon, a deep narrow slot canyon formed by water and wind erosion, Navajo Tribal Lands, Page, Arizona

Entrance chamber, Antelope Slot Canyon.

Antelope Canyon, a deep narrow slot canyon formed by water and wind erosion, Navajo Tribal Lands, Page, Arizona

Antelope Canyon, a deep narrow slot canyon formed by water and wind erosion.

A photographer works amidst the striated walls and dramatic light within Antelope Canyon, a deep narrow slot canyon formed by water and wind erosion, Navajo Tribal Lands, Page, Arizona

A photographer works amidst the striated walls and dramatic light within Antelope Canyon, Navajo Tribal Lands, Arizona.

Antelope Canyon, a deep narrow slot canyon formed by water and wind erosion, Navajo Tribal Lands, Page, Arizona

Upper Antelope Canyon Slot Canyon, Navajo Tribal Lands

Antelope Canyon, a deep narrow slot canyon formed by water and wind erosion, Navajo Tribal Lands, Page, Arizona

Eroded sandstone walls of a narrow slot canyon, carved by flash floods and eons of water erosion.