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; …
Volcano | Definition, Types, & Facts | Britannica
Aug 20, 2026 · A volcano is a vent in the Earth's crust from which molten rock, hot rock fragments, and gases erupt. These eruptions …
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 …
VolcanoNow - Live volcano status and eruption tracker
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Active Volcanoes in 2026 — Currently Erupting & Recently Active
Complete list of currently erupting and recently active volcanoes worldwide, updated for 2026 with eruption dates, locations, and …
Global Volcanism Program - Smithsonian Institution
The range of volcanic behavior is great enough, and volcano lifetimes are long enough, that we must integrate observations of …
Volcano - Simple English Wikipedia, the free encyclopedia
2How volcanoes are formed. 3Classification. Toggle Classification subsection. 3.1Active. 3.2Dormant (inactive) 3.3Extinct (dead …
Volcano Hazards Program | U.S. Geological Survey
Volcano Observatory staff monitor, research, and issue formal notices of activity for volcanoes in assigned geographic areas. …
Current Eruptions - Global Volcanism Program
The Smithsonian / USGS Weekly Volcanic Activity Report (WVAR) for the week ending on 2 September 2026 includes the 22 …
What Is a Volcano? | NASA Space Place – NASA Science for Kids
Jul 31, 2026 · Volcanoes occur when material significantly warmer than its surroundings is erupted onto the surface of a planet or …