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People who live in the Nepalese mountains have been guiding foreign climbers up the world's tallest mountain since the 1920s. We take a closer look at their vital role in these high-risk expeditions ...

The Last Line of Defense boulder problem has a proposed rating of 8C+, which would make it one of the California park's ...

"In the past, wherever you looked, you would see snow-covered mountains. But now, black rocky hills have started to appear.