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Planet Earth

How is a Volcano built?


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November 07, 2007 5:50PM

After many many years the rock grows taller and taller because the volcano keeps erupting and cooling, making the volcano bigger and bigger. Magma (lava) seeps through cracks in the earths crust, it cools and hardens to form a cone shape on the surface. This happens repeatedly over hundreds of years thus eventually forming the cone shape of a volcano.