Montana comes in second, with 37 percent of its trails deemed exhausting or dangerous. One standout: Apgar/Huckleberry Lookout Trail in Glacier National Park, which attracts grizzly bears.

The fatal incident occurred while Angela Lin was admiring large sequoias along a trail in the park with her boyfriend and two friends.

The least visited U.S. states have the least tourists, but they're also home to some of the country's most dazzling sights and most comfortable accommodations.

Glaciers on Mount Cilo in southeastern Turkey are disappearing at an alarming rate due to rising global temperatures. Once ...

Kemal Ozdemir looked up at the bare peaks of Mount Cilo in Turkey's Kurdish majority southeast: "There were glaciers 10 years ...

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Back in August 2015, two high school students were asleep in a tent in the Upper Pines Campground when an oak limb fell, ...