Stratovolcanoes are cone-shaped volcanoes that build up from layer after layer of lava and ash, one eruption at a time. They're also called composite volcanoes. Mount Rainier in Washington is a ...

There are two main types of volcano - composite and shield ... round hill known as a cinder cone. A lava tube may also form, beneath the surface of the ground, when low viscosity lava develops ...

Four types of volcanoes—shield, composite, cinder cone, and plug dome—can be found in Lassen Volcanic National Park, where they literally bubble and steam.