There are two main types of volcano ... Ash released from shield volcanoes often builds up around the vent forming a steep, round hill known as a cinder cone. A lava tube may also form, beneath ...

But the eruption stopped as suddenly as ... try Lassen Peak. Four types of volcanoes—shield, composite, cinder cone, and plug dome—can be found in Lassen Volcanic National Park, where they ...

For 25 million years, volcanos spewed molten rock and ash across New Mexico, forming craters, super volcanos, cinder cones, lava flows and peak-less mountains. Over time, these massive eruptions ...