The Grand Canyon was formed with the shifting of tectonic plates, which lifted layers of rock into a high and relatively flat plateau, according to the park service. About 5 million to 6 million years ...

Find out that the Grand Canyon, a colossal Arizona chasm carved by the Colorado River, showcases billions of years of geological history. Its vibrant, layered rocks reveal Earth's past. A UNESCO World ...

Rocks gathered along the Colorado River contained evidence of a bustling community of animals in an ancient sea.

Discover the Grand Canyon, a breathtaking natural wonder in Arizona. Learn about its geology, the Colorado River's role in ...

New research links the impact at Meteor Crater to a Grand Canyon landslide that may have created an ancient lake 56,000 years ...

One of the greatest wonders of the natural world, the Grand Canyon is the result of the Colorado River eating away at layers of red sandstone and other rock for millions of years, leaving a gash ...

As you trek along the trail, you'll be enveloped by canyon walls that rise dramatically around you. The landscape is dotted with desert flora like indigo bush and rock nettle, contrasted against ...

Glen Canyon Dam has impounded the Colorado River near the Arizona-Utah line since 1963, and with it the annual load of sand that natural snowmelt floods previously churned up onto beaches and ...

Grand Canyon National Park is about 1,900 square miles (nearly 5,000 square kilometers), according to the National Park Service, which makes it bigger than Rhode Island.