Grand Canyon National Park is the United States' 15th oldest national park. Unique combinations of geologic color and erosional forms decorate a canyon that is 277 river miles (446km) long, up to 18 miles (29km) wide, and a mile (1.6km) deep. Grand Canyon overwhelms our senses through its immense size
  The North Rim is a smaller, more remote area with less tourist activity. It is accessed by Arizona State Route 67.
  The South Rim is more accessible than the North Rim;most visitors to the park come to the South Rim, arriving on Arizona State Route 64. The highway enters the park through the South Entrance, near Tusayan, Arizona, and heads eastward, leaving the park through the East Entrance. Interstate 40 provides access to the area from the south. From the north, U.S. Route 89 connects Utah, Colorado, and the North Rim to the South Rim. Overall, some thirty miles of the South Rim are accessible by road.