A volcano can be a mountain. The surface of the earth boils over the liquified rock. Ash and gases also spread into the air whenever a volcano erupts. Volcanos can be of different types. Based on their activeness, they are classified as active, dormant or extinct. The active one may erupt anytime sooner or later. A dormant volcano has been known to erupt, however, have not emitted lava and gases for quite some time and extinct or wiped out volcanoes are probably not going to erupt anymore. The fumingly hot molten or semi-fluid rock that flows down, the earth is known as "lava". The lava that comes out of a volcano has great value. It contains deposits of aluminium, diamonds, gold, nickel, lead, zinc, and copper. Volcanoes can create various kinds of lava or magma. 1. Pahoehoe Lava- Smooth gelatinous and wrinkly 2. Aa lava - Thicker and rough-textured 3.Pillow Lava - Pillow Shaped 10 Volcano facts 1. Molten rock is called lava or magma. 2. As long as the mo