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May 16

The Grand Canyon Is a chasm 277 miles long and up to 18 miles wideIs 2,400 feet above sea level below Yavapai Point, about 4,500 feet below the South Rim and 5,400 feet below the North Rim, for an average depth of about one mile.Took 3 to 6 million years to form; erosion continues to alter its contours.Includes approximately 70 species of mammals, 250 species of birds, 25 types of reptiles and five species of amphibians.Comprises six of the seven climatic belts recognized throughout the world, varying from Mexican desert at the bottom to Arctic-Alpine in the San Francisco peaks.Was formed by seismic upheaval.Continues to be shaped by the Colorado River, which flows west through the canyon, averages 300 feet in width (at the gauging station near Kaibab Bridge), 45 feet in depth, and flows at an average speed of 4 miles per hour.

The Grand Canyon 

  • Is a chasm 277 miles long and up to 18 miles wide
  • Is 2,400 feet above sea level below Yavapai Point, about 4,500 feet below the South Rim and 5,400 feet below the North Rim, for an average depth of about one mile.
  • Took 3 to 6 million years to form; erosion continues to alter its contours.
  • Includes approximately 70 species of mammals, 250 species of birds, 25 types of reptiles and five species of amphibians.
  • Comprises six of the seven climatic belts recognized throughout the world, varying from Mexican desert at the bottom to Arctic-Alpine in the San Francisco peaks.
  • Was formed by seismic upheaval.
  • Continues to be shaped by the Colorado River, which flows west through the canyon, averages 300 feet in width (at the gauging station near Kaibab Bridge), 45 feet in depth, and flows at an average speed of 4 miles per hour.

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