Mount Etna in Sicily, Italy, is an example of a composite volcano. Shield volcanoes do not have such violent eruptions. These volcanoes tend to have gentle slopes and their runnier lava spreads ...

O ff the coast of Oregon, a massive undersea volcano, Axial Seamount, is gearing up for its next eruption.Situated 300 miles offshore and 4,626 feet beneath the Pacific Ocean’s surface, this ...