When Mount Spurr erupted in 1992, ash spewed some 50,000 feet into the air and blanketed much of the Matanuska-Susitna Valley ...

Multiple small earthquakes were detected beneath a massive US volcano this week, as experts warn may be 'moving closer to an ...

They can have violent eruptions and can grow bigger as layers of thick lava and ash harden on top of each other. Mount Etna in Sicily, Italy, is an example of a composite volcano. Shield volcanoes ...