Think you’ve mastered the canyon? Take part two of our Grand Canyon National Park quiz and challenge your knowledge of its history and geology.

Though its last eruption was a century ago, California's Lassen Peak is the centerpiece of a volcanic panorama.

On this day in 1916, President Woodrow Wilson signed the act creating the National Park Service. Its first director, ...

Arizona is home to many beautiful spots, but one stands out among the rest. In fact, this natural wonder recently was named the best in the nation.

There are hundreds of Yellowstone National Park tours to choose from, giving visitors to America's greatest treasure sev ...

Many fans of the outdoors find their way to canyons in America’s national parks for their thrill and beauty. Even so, steep ...

A New Jersey hiker has been missing for more than a week at Grand Canyon National Park as a raging "mega-fire" has exploded to more than 123,000 acres along the canyon’s northern rim.

The Dragon Bravo Fire, which destroyed the Grand Canyon Lodge and has forced the closure of parts of Grand Canyon National Park, grew to more than 123,000 acres on Monday.

A man has been missing for over a week after reportedly hiking along one of the most challenging trails in the Grand Canyon, according to the National Park Service.

National Park Service A man has been missing for over a week after reportedly hiking along one of the most challenging trails in the Grand Canyon, according to the National Park Service.

A wildfire burning since July 4 has closed the North Rim of Grand Canyon National Park for the rest of the season.