The Grand Canyon is on of the Seven Natural Wonders of the World. It is a red rocked gorge carved out of the Colorado River in Arizona. It took 5.4 million years to create. The latest addition to Grand Canyon National Park is the Skywalk. The Skywalk puts you 4,000 feet over the Colorado River on5 layers of glass. This structure is an engineering marvel and took 2 1/2 years and $30 million to
. construct. To learn more about the Grand Canyon Skywalk, visit http://www.grandcanyonskywalk.com/index.html.
