While many volcanoes are mountains, it is possible for a volcano to erupt from a vent in any type of land form. Over time, volcanoes become mountains by depositing their discharge around them in ever-increasing layers. N... More »

No two volcanoes are exactly the same, as they all have differences in dimensions of their mountains and craters, as well as their relative frequency and type of eruption. Volcanoes come in cinder cone, shield and strato... More »

Hot melted rocks collect under the Earth's surface and when the pressure becomes too hard, the Earth's skin breaks, and a volcano erupts. The melted rock inside the Earth is called magma, but when it comes out in an erup... More »

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A Cascade Range volcano is one that is part of a series of mountains in western North America that includes an arc of volcanoes. The Cascade Range extends from British Columbia through Washington and Oregon to northern C... More »

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The opening at the top of a volcano is called a vent and is where lava flows from erupting volcanoes. Volcanic vents usually sit inside craters, which are circular depressions in the ground. More »

Some facts about composite volcanoes include the fact that some of the best-known mountains around the world are composite volcanoes. This list includes Mount Fuji in Japan, Mount Hood in Oregon and Mount St. Helens and ... More »

Mount Vesuvius, a volcano off the west coast of Italy, is one of the only active volcanoes on Europe's mainland. It is part of the Campanian volcanic arc, which rests on a tectonic boundary where the African plate is bei... More »

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