Wikipedia defines the term as follows: �A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.� A volcanic eruption is when lava and gas are released from a volcano�sometimes explosively.
In layman�s terms, it is a natural calamity that leads to dire consequences including loss of life and property. Indonesia is the most prone to volcanic eruptions in the world and is known as the �Pacific Ring of Fire�. Its 1815 eruption of Mount Tambora is the most powerful in history.