Volcanic landscapes are formed by the eruption of magma from beneath the Earth's crust. When magma reaches the surface, it can create various landforms, such as volcanoes, lava plateaus, and calderas. These features can vary in shape and size, depending on the type of eruption and the composition of the magma. The soil in volcanic areas is often very fertile due to the minerals released during eruptions. This makes regions like the Hawaiian Islands and Mount St. Helens not only geologically interesting but also agriculturally productive. Over time, volcanic activity can significantly reshape the surrounding environment.