#### Deep below our feet, a mass of red-hot liquid rock is constantly flowingand churning. Sometimes, this rock erupts through openings in the surface ofthe Earth. These amazing displays of nature´s power are called volcanoes.Learn about different type
#### Deep below our feet, a mass of red-hot liquid rock is constantly flowingand churning. Sometimes, this rock erupts through openings in the surface ofthe Earth. These amazing displays of nature´s power are called volcanoes.Learn about different type