As trails near Mount Rainier thaw this spring and summer, check out these waterfall hikes in the area (plus a miniature ...

Tucked away just outside the small town of Madrid, Iowa lies a natural wonder that defies everything you thought you knew about the Hawkeye State’s landscape – Ledges State Park, where dramatic ...

These ancient rocks tell the story of when central Iowa was covered by a shallow sea, long before corn became the state’s unofficial mascot. The park’s history as a public recreation area goes back to ...

U.S. Army Lt. John W. Gunnison, then working on a survey of the Great Lakes, wrote a letter to his Mormon friend, Albert ...

As fires increasingly affect crags around the world, we explore how best to approach climbing areas burnt by wildfire.

Dillon Perry made the discovery of the mystery rock while hunting for agates along the Yellowstone River near Greycliff.

Perry made the discovery of the mystery rock while hunting for agates along the Yellowstone River near Greycliff.

A Kick streamer was fined hundreds of dollars after carving ‘KICK.COM’ into an ancient landmark at the Grand Canyon. Kick ...

Kenneth Sims and other research scientists recently discovered that mafic volcanism of Henrys Fork Caldera -- located in ...

A weathered sign in the Minnesota River Valley proudly proclaims: “World’s Oldest Rock.” Erected in 1975, it marks a 3.8-billion-year-old gneiss — or so scientists thought.

One person was rushed to the hospital after a rock slide in the westbound lanes of I-70 near Fall River Road on Thursday ...