Feb 25, 2025 · The world's largest volcano: Mauna Loa, which rises 30,000 feet (9,000 meters) above the seafloor. Number of active volcanoes in the U.S.: 165.

Jun 2, 2025 · Scientists observing the volcano said that the latest eruptive activity likely started after a collapse of material in Mount Etna's South-East Crater, where the "explosive activity" …

Jan 9, 2025 · The closer a volcano is to erupting, the greener the trees around it look from space. Watch mesmerizing 1,000-foot-tall lava fountains: Kilauea volcano erupting in ways not seen …

Dec 30, 2024 · A volcano that hasn't erupted in the Holocene is considered extinct. This geologic-timescale-based distinction is somewhat arbitrary, Ben Kennedy , a volcanologist at the …

Mar 18, 2025 · In 1992, volcanic tremor started about three weeks before Mount Spurr erupted. Another nearby volcano that erupted in 2009, Mount Readout, showed volcanic tremor for two …

4 days ago · Mount Lewotobi Laki-laki first erupted at 5:35 p.m. local time (5:35 a.m. ET) on Tuesday, unleashing a mushroom-shaped ash cloud measuring more than 6 miles (10 …

Jan 2, 2025 · The volcano, known as Axial, is a seamount 300 miles (480 kilometers) west of Cannon Beach, Oregon. The Axial seamount erupts regularly — it rumbled to life in 1998, 2011 …

Jun 10, 2025 · The U.S. Geological Survey defines a volcano as a vent in Earth's surface, either on land or on the seafloor, from which molten rock called magma, as well as ash and gases, …

Jun 10, 2025 · Mount Etna has had more than 30 different eruptive phases over the last century, totalling around 76.5 years between them. The volcano's unusually high level of activity is due …

Jun 4, 2025 · The Italian volcano, which is the largest active volcano in Europe, has been erupting on and off for centuries, according to the Smithsonian's Global Volcanism Program. The …