Volcano - Wikipedia
The most common perception of a volcano is of a conical mountain, spewing lava and poisonous gases from a crater at its summit; however, this describes just one of the many types of volcano. The …
Volcano | Definition, Types, & Facts | Britannica
May 18, 2026 · Volcano, vent in the crust of Earth or another planet or satellite, from which issue eruptions of molten rock, hot rock fragments, and hot gases. The term volcano can also refer to the …
About Volcanoes | U.S. Geological Survey - USGS.gov
Molten rock below the surface of the Earth that rises in volcanic vents is known as magma, but after it erupts from a volcano it is called lava. Magma is made of molten rock, crystals, and dissolved …
Which Volcanoes are Erupting? - List & map of Active
1 day ago · List & map of currently active volcanoes. Notes: The status colors of volcanoes are our subjective interpretation of activity status (unrest, alert, erupting, major eruption) and have no official …
Kīlauea | U.S. Geological Survey
9 hours ago · The science of volcanology advances disproportionately during exceptionally large or well-observed eruptions. The 2018 eruption of Kīlauea Volcano (Hawai‘i) was its most impactful in …
Watch: Lava soars 1,100 ft above Hawaii’s Kilauea in latest eruption
Nov 10, 2025 · Hawaii's Kilauea volcano, one of the world's most active, erupted again on 9 November shooting a massive fountain of lava into the air. The US Geological Survey said the volcano erupted...
Anatomy of a Volcano - U.S. National Park Service
Jul 5, 2023 · Volcanoes are both the vents where molten rock material and volcanic gases are erupted from within Earth’s interior, and the cones and mountains built up around those vents. But beyond …
Volcano facts and information | National Geographic
Jul 10, 2025 · Volcanoes are Earth’s geologic architects. They’ve created more than 80 percent of our planet’s surface, laying the foundation that has allowed life to thrive. Their explosive force crafts...
List of the world’s major volcanoes | Locations & Facts | Britannica
There are more than 1,500 potentially active volcanoes or volcanic areas around the world at any given time. They may be the world’s most dynamic landforms, given their ability to grow by accretion or …
Volcanoes: Facts, news, features and articles about geology's fieriest ...
Mar 2, 2026 · From lava fountains to towering ash clouds, volcanoes produce some of the most dramatic geological events on the planet. Volcanoes are cracks in Earth's crust that allow molten rock and hot...