A volcano is an opening in a planet's surface which allows hot, molten rock, ash and gases to escape from below the surface. Volcanic activity involving the extrusion of rock tends to form mountains over a period of time.

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Volcano World
Brings modern and near real-time volcano information.
Activity Report (Weekly)
Data on new activity and unrest, and ongoing activity at volcanoes throughout the world.
Colima's Active Volcano
Photographs and information on this active volcano in Mexico.
Decade Volcano -- Santorini Greece
Information, photos, links and travel to Santorini, Stromboli, and other active volcanoes.
Eruptions of Mount St. Helens
Online version of a United States Geological Survey brochure on the history and geology of eruptions at Mount St. Helens.
Explorevolcanoes.com
Guide to the world's best known and most accessible volcanoes. Each volcanic areas geology is accompanied by an eruptive history, walks and excursions. Includes an educational volcanic geology section.
Five College Volcanology
Lecture notes for a course on volcanoes at the University of Massachusetts.
Global Volcanism Program
Smithsonian Institution's complete background and eruption information on 1500 volcanoes during the past 10,000 years.
Hawaiian and Other Volcanoes
Eclectic site focused on Hawaiian volcanoes with links and cams to other volcanoes worldwide.
Katla Volcano News
Provides news of this volcano in Iceland, views, warnings and resources.
Links to Volcano Information
Excellent data on Latin American volcanoes, professors of volcanology, volcano observatories, and Canadian volcanoes.
The Lost World: Records in the Rocks
Description of the complex geology of the Tweed Volcano in Australia, probably the largest, most easily accessible, erosion caldera in the world.
Michigan Technological University Volcanoes
Provides information about volcanic hazard mitigation.
Mount St. Helens
Fact sheet of Mount St. Helens volcanic activity 1980 to 2000.
Mount St. Helens National Volcanic Monument
General visitor information, photo gallery, monument attractions, volcano-cam, seismographic data and resource center links.
Physical Volcanology
The volcanoes of southern Italy
Russia's Volcanoes
Guide to volcanoes of Kamchatka with images.
Stromboli Volcano
Data on Stromboli Volcano in Italian.
U.S. Geological Survey, Volcano Hazards Program
Monitors volcanoes and collects scientific information on volcanoes in the United States and elsewhere to reduce the risk from volcanic activity.
Virtually Hawaii
Hawaii satellite images, Virtual field trips and flights past the volcanoes.
Volcano Live
Provides information about volcanoes, eruption, and volcano treks, and links to other volcano educational sites. Includes links to volcano-cams.
Volcanoes and Volcanism
Comprehensive site with news about latest activity in English, German, and Norwegian.
Volcanoes of the United States
Detailed information about US volcanoes by Steven R. Brantley of the U.S. Geological Survey.
Vulkane.net
Offers information on volcanoes, volcanic eruptions, volcanism and volcanology. Includes videos and photographs of eruptions.

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Last update:
May 5, 2016 at 15:15:11 UTC
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