Deadliest volcanic eruption: The 1815 eruption of Mount Tambora in Indonesia, which killed up to 100,000 people From lava fountains to towering ash clouds, volcanoes produce some of the most dramatic ...

Volcano Watch is a weekly article and activity update written by US Geological Survey Hawaiian Volcano Observatory scientists and affiliates. This photo shows the gap between the south (left) and ...

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

A volcanic formation known as Pele’s hair is produced when air-filled magma is stretched, according to a new study by a team ...

Massive Deep-Sea Volcano Offers New Clues to How Earth Was Shaped ...

Volcano Watch” is a weekly article and activity update written by U.S. Geological Survey Hawaiian Volcano Observatory ...

Geochemical analysis of erupted tephra samples over the past decade help scientists understand the temperature of Kilauea’s shallow magma system under the summit — and things have been “heating up!” ...

The Cordón Caulle volcano in Chile is part of the Puyehue-Cordón Caulle Volcanic Complex along the Andes mountain range in southern Chile. Philipp Ruprecht, an associate professor at the University of ...

Geologic mapping has been one of the most fundamental mandates of the U.S. Geological Survey (USGS) since its establishment in 1879. Congress created the USGS to “classify the public lands and examine ...

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

Glenwood Springs sits nearby, making Dotsero a natural first or last stop on a broader western Colorado loop. A quick stop at the crater, followed by time in Glenwood Canyon, creates a satisfying half ...

Poços de Caldas, in the southern part of the state of Minas Gerais, Brazil, is built on one of the most unique geological ...