Mount Spurr, located about 75 miles West of Anchorage, has been acting up in recent weeks, prompting officials at the U.S. Geological Survey and Alaska Volcano Observatory to issue a yellow alert.

Discover America's most scenic roads with the top national park drives. Our guide features eight stunning scenic routes with ...

From towering mountains and serene fiords shrouded in mist, to black sand beaches and forests housing some of the world's ...

Tired of crowded national parks, or want something new? Here are less visited national parks in California, what months to ...

When the weather’s nice, of course.) • The U.S. Geological Survey says that Glacier Peak last erupted about 300 years ago, but its eruptions over the millennia before that time contributed to ...

What not to miss: The challenging 5-mile round-trip Lassen Peak Trail offers spectacular ... Shaped into dramatic rock spires by prehistoric eruptions and rich in oak and chaparral forest, the ...

Hikers on the Lassen Peak Trail at Lassen National Park ... Shaped into dramatic rock spires by prehistoric eruptions and rich in oak and chaparral forest, the 27,000-acre Pinnacles National ...