What is a Volcanic mountain? A volcanic mountain is formed by hot molten liquid or magma coming out as lava through cracks in the earth’s surface and solidifying is called a volcanic mountain. Volcanic mountains consist of magma chamber, Vent, Lava, Crater, and pyroclastic flow. Volcanic soil or the soil around the mountain is very fertile. This is because all the required nutrients come out of the volcanic eruption. Characteristics of Volcanic Mountain Examples of Volcanic mountains