Volcano discovery

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Twig

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What is a volcano plus various famous volcanic eruptions

Volcano Explorer

Learn about Pompeii. Build your own volcano.

FEMA

A volcano is a mountain that opens downward to a pool of molten rock below the surface of the earth. When pressure builds up, eruptions occur. Gases and rock shoot up through the opening and spill over or fill the air with lava fragments. Eruptions can cause lateral blasts, lava flows, hot ash flows, mudslides, avalanches, falling ash and floods. Volcano eruptions have been known to knock down entire forests. An erupting volcano can trigger tsunamis, flashfloods, earthquakes, mudflows and rockfalls.

List of Volcanoes

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A long list of volcanoes in our wolrd.

Volcanoes

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A volcano is a mountain that opens downward to a pool of molten rock below the surface of the earth. When pressure builds up, eruptions occur.

Global Volcanism Program

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History and information regarding volcanoes worldwide.

Volcano World

Find out more about volacnoes around the world. Check web cams and current eruptions.

Mount St. Hellens

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MOUNT ST. HELENS 20 YEARS LATER: WHAT WE'VE LEARNED by Robert I. Tilling