Grand Canyon - View from Yaki Point
The steep-sided, 446 km long Grand Canyon is carved in the Colorado Plateau by the Colorado River. At some places it is up to 29 km wide and attains a depth of 1,800 meters. Nearly two billion years of Earth's geological history are visible in the canyon which is exposed to the elements as the Colorado River and its tributaries cut their channels through layer after layer of rock, continually eroding and forming canyon’s shape.
Before European immigration, the area was inhabited by Native Americans who built settlements within the canyon and its many caves. The Pueblo people considered the Grand Canyon ("Ongtupqa" in Hopi language) a holy site and made pilgrimages to it. In 1919 Grand Canyon became US National Park.