On his first trip to the Grand Canyon Star Party, Dave Eicher joins thousands for a week of lectures, observing, and cosmic wonder.

Grand Canyon Caverns and restaurant have opened after being closed for nearly 3 years. Here's why it closed and how to go into the Grand Canyon caves.

To behold the Grand Canyon from above, visitors usually book a helicopter tour or ride a zip line. But at the west rim of the canyon, there’s a third (and equally adrenaline-inducing) option ...

An unusually high number of hikers had to be rescued by helicopter on the Grand Canyon, and a construction site is to blame.

North America's deepest gorge, Hells Canyon, which slithers along the border of Idaho and Oregon, is a surprisingly new addition to the Earth's ancient landscape. A recent study suggests that a ...

Hells Canyon might be deeper than the Grand Canyon, but it's barely 2 million years old, according to a new study.

Thousands of hikers take on the Grand Canyon’s Rim-to-Rim trek every summer. This year, however, a major trail closure has some experts raising serious safety concerns.

In Grand Rapids, MI, you get the best of two worlds: a vibrant, fun city and great fly fishing less than an hour away.

Dr. Dennis Smith, a 74-year-old orthopedic surgeon from Washington, died during a rim-to-rim hike in the Grand Canyon. His death is under investigation.

The National Parks Foundation said the Grand Canyon rim-to-rim hike covers 24 miles and is “strenuous.” “Being unprepared can have catastrophic results,” the foundation said on its website.