Millions of people visit the Grand Canyon each year. But this year will be different for one portion of the national park. A wildfire has shuttered the North Rim, a place where visitors could ...

Research Grand Canyon landslide-dam and paleolake triggered by the Meteor Crater impact at 56 ka by a team from the ...

If you want to extend your float even farther and hit two more rapids, tack on another 3.5 miles through Seidel’s Suckhole ...

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

Arizona's Grand Canyon might steal the spotlight, but the state's lesser-known canyons are just as worth visiting (while featuring fewer crowds).

A new study suggests a meteor strike that created Arizona’s Meteor Crater 56,000 years ago may have triggered a massive ...

With a reddish tint from sediment carried over long miles, the mighty river that carved the Grand Canyon has been known by ...

Missoula was once an industrial lumber town, its ambiance haunted by black smoke and the buzz of saws. But today, things are different. Modern-day Missoula is outdoorsy, artistic and musical, with ...

Splash, dunk, rinse, laugh, repeat. Since the 1970s, commercial whitewater rafting has been one of the most idealistic and adventurous ways to experience Colorado’s historic and wild canyon ...