A newly discovered crack near Yosemite’s Royal Arches cliff has forced park officials to take swift action, closing sections ...

"Whereas Arizona’s Grand Canyon was carved by water over the last 5 to 6 million years and from integrated paleocanyons that ...

The Grand Canyon in Arizona is one of Earth's natural wonders, carved out over millions of years by the gradual erosion power ...

This giant natural cave is right below one of America's favorite theme parks (and yes, you’re allowed to explore it).

Two hunting buddies hire guides to ride them into the backcountry and hunt elk and mountain goats in this story from the ...