The Earth is not always quiet. An isolated region of northeast California offers a land of boiling springs, steaming sulfur vents, mud pots and volcanoes. The boisterous geology of the southern Cas… ...

LASSEN VOLCANIC NATIONAL PARK, Calif.–The Cinder Cone looks brand-new. Its sides slant gracefully toward the pointed top, 700 feet above the lava-cluttered ground. But this is territory where… ...

One of California’s riskiest volcanoes has for decades been undergoing geological changes and seismic activity, which are sometimes a precursor to an eruption, but — thankfully — no ...

The most recent of these was the Lassen Peak eruption of 1914 to 1917 in Northern California. ... Earthquakes Ring of Fire Volcanoes Maps USGS. Most read in World.

The US Geological Survey released its first report on volcanic threats since ... the Cinder Cone eruption in 1666, and the Lassen Peak eruption just about 100 years ago. 5 — Mount Shasta, ...

Government scientists have classified 18 U.S. volcanoes as "very high threat" because of what's been happening inside them and how close they are to people.

Government scientists have classified 18 U.S. volcanoes as “very high threat” because of what’s been happening inside them and how close they are to people. The U.S. Geological Su… ...