Episode 37 of the ongoing Halemaʻumaʻu eruption began at 2:30 p.m. HST on Nov. 25, according to the Hawaiian Volcano ...

Scientists at the USGS Hawaiian Volcano Observatory had been collecting data and forming a hypothesis that Kilauea’s south ...

Klyuchevskaya Volcano on Russia's Kamchatka Peninsula is the largest active volcano in the Northern Hemisphere. A caldera is the circular depression in the center of a volcano's summit that forms ...

Lava is molten rock from a volcano that reaches the Earth’s surface. Liquid rock below the Earth’s surface is referred to as magma. More than 50% of the world’s active volcanoes above sea level ...

The eruption of May 18, 1980, reduced the summit of Mount St. Helens by 1,300 feet. But that was not the only geologic event that has reduced its profile. During its eruptions from 2004 to 2008, Mount ...

Equal parts terrifying and beautiful, volcanoes represent the sheer power of nature. Some, like Sicily’s Mount Etna, are known for their frequent bursts of activity, while others have lain dormant for ...

The volcano on the Scottish peninsula Ardnamurchan is a popular place for the study of rocks and structures in the core of a volcano. Geology students read about it in text books and geologists have ...

When the crew aboard the research vessel Sonne set out on a cruise last spring, they were expecting a routine mapping expedition in the South Pacific. But they were in for a big surprise. They ended ...

The southernmost active volcano on the planet is Antarctica's Mount Erebus. It is also home to Earth's only long-lived lava lakes. "Lahar" is an Indonesian word that refers to a type of volcanic flow: ...

Lava is molten rock from a volcano that reaches the Earth’s surface. Liquid rock below the Earth’s surface is referred to as magma. More than 50% of the world’s active volcanoes above sea level ...