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This is a volcanic "cone".
Click on image for full size
Courtesy of USGS

Volcanoes

There are several ways in which a volcano can form, just as there are several different kinds of volcanoes. Many of the volcanoes on the Earth's surface are part of the "Pacific Rim of Fire".

During the eruption of a volcano, flowing lava and ash, harden around the opening out of which they came, forming a large cone. This cone is what we know as a volcano.

Among the different kinds of volcanos are:


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Volcano Formation

Volcanoes form when hot material from below rises and leaks into the crust. The hot material, called magma, rising from lower ground, gathers in a reservoir called the magma chamber. Eventually, but not...more

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Cinder Cones

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Magma Chamber

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Volcano Measurement

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Flowing Lava

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