Over the edge.
The newly built "Canyon Skywalk" will overhang the rim of Earth's largest canyon. "The canyon region began to form about 60 million years ago," says Richard Young, a geologist at the State University of New York at Geneseo. During that time, rock plates that make up Earth's outer layer, or crust, shifted--lifting the region. Millions of years later, the Colorado River began flowing over the uplifted land. Over time, the surging river water eroded, or wore away, the rocks--carving out the canyon. The result for today's visitors: a vertical view with a heart-stopping drop.
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|Title Annotation:||Grand Canyon|
|Article Type:||Brief Article|
|Date:||Dec 12, 2005|
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