Mount Shasta presents a unique challenge that most other active volcanoes don't for USGS scientists. The only place to sample ...

Tiny by volcano standards. The Sutter Buttes are 10 miles wide and poke up 2,000 feet. In classic butte fashion, they are ...

Around the world, volcanologists are following the path of magma as it travels between connected volcanoes, in an effort that ...

Southern California has many treasures, but believe it or not, nothing like this hidden gem. When most of us think of volcanoes, we think of molten lava spewing up from the earth and melting ...

The eruption of a Hawaii volcano has people warily eyeing volcanic peaks on America's West Coast. The West Coast is home to an 800-mile (1,300-kilometer) chain of 13 volcanoes from Washington state's ...

The U.S. Geological Survey is updating its volcano threat assessments for the first time in 13 years. Four volcanoes in California are now considered to be a very high threat. Those include Mount ...