Fagradalsfjall's 2021 eruption
A spectacular video showing lava flowing in several streams from a central cone in Iceland's Geldingadalir valley in 2021.
© ronib1979—Creatas Video+/Getty Images
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Encyclopædia Britannica, Inc.Volcanic activity at Kilauea in Hawaii.
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Major funding for this expedition was provided by NOAA Ocean Exploration Program and NOAA Vents Program; video clips edited by Bill Chadwick, Oregon State University/NOAAMolten sulfur and volcanic gases bubbling out of an undersea vent near the Mariana Islands.
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Encyclopædia Britannica, Inc.John Rafferty, associate editor of Earth sciences at Encyclopædia Britannica, discusses the formation of tsunamis.
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Encyclopædia Britannica, Inc.Geysers in Yellowstone National Park, northwestern Wyoming, U.S.
