When it does reach the surface, however, a volcano is formed. Thus subduction zones are bordered by chains of volcanoes called volcanic arcs. Typical examples are the volcanoes in the Pacific Ring of …

Nov 16, 2025 · List & map of currently active volcanoes. Updated: Nov 16, 2025 04:37 GMT - 1 day 22 hours ago refresh. Try our free app!

Volcanoes are openings, or vents where lava, tephra (small rocks), and steam erupt onto the Earth's surface. Volcanic eruptions can last days, months, or even years.

Nov 26, 2025 · Strictly speaking, the term volcano means the vent from which magma and other substances erupt to the surface, but it can also refer to the landform created by the accumulation of …

There have been no explosions at Great Sitkin Volcano since an event in May 2021. The volcano is monitored using local seismic and infrasound sensors, satellite data and web cameras, and regional …

Volcanoes have killed thousands of people and caused some of the most frightening events in human history. This site includes information about volcanoes, their activity, and how they form and erupt.

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...

Feb 25, 2025 · Discover interesting facts about volcanoes, including why and where they form and history's deadliest eruption.

May 21, 2025 · Volcanoes are classified as active, dormant, or extinct. Active volcanoes have a recent history of eruptions; they are likely to erupt again. Dormant volcanoes have not erupted for a very …

Aug 11, 2025 · Find out the current status of Kīlauea and Mauna Loa volcanoes on this page, courtesy of the USGS Hawaiian Volcano Observatory. A variety of videos produced by Hawaiʻi Volcanoes …