Millions of people visit the Grand Canyon each year. But this year will be different for one portion of the national park. A ...

A massive landslide would have dammed the Colorado River, forming a deep lake that has since dried up. A meteorite impact ...

The Grand Canyon has an average depth of 4,000 feet, according to the National Parks Service. At its lowest point, the canyon is 6,000 feet deep . At its widest, the canyon spans 18 miles across.