What is a volcano?
A volcano is a mountain that opens to a pool of rock and magma, and its shape is a cone. Normally the magma is is under the earth's crust, and the volcano is made out of basalt, but some aren't. A extinct volcano is a volcano that has erupted, and has been dormant for over a very long time, and a dormant volcano is one that will eventually erupt.
A volcano is a mountain that opens to a pool of rock and magma, and its shape is a cone. Normally the magma is is under the earth's crust, and the volcano is made out of basalt, but some aren't. A extinct volcano is a volcano that has erupted, and has been dormant for over a very long time, and a dormant volcano is one that will eventually erupt.