Upper Antelope Canyon (The Crack) is a slot canyon, about 200m long, in the American Southwest, on Navajo land east of Page, Arizona.
The Navajo name for Upper Antelope Canyon is Tsé bighánílíní, which means 'the place where water runs through rocks'. It is in the LeChee Chapter of the Navajo Nation. They are accessible by guided tour only.
Antelope Canyon was formed by the erosion of Navajo Sandstone due to flash flooding and other sub-aerial processes. Rainwater, especially during monsoon season, runs into the extensive basin above the slot canyon sections, picking up speed and sand as it rushes into the narrow passageways. Over time the passageways eroded away, deepening the corridors and smoothing hard edges to form characteristic "flowing" shapes.
