There are two main types of volcano - composite and shield. The two types of volcano form in different places and have very different characteristics. Ash released from shield volcanoes often ...

A volcano is an opening in the Earth's crust that allows magma, hot ash and gases to escape. Composite volcanoes are the most common type of volcano. They can have violent eruptions and can grow ...

An "unusually large" ice volcano in Iceland could be about to blow after more than 130 earthquakes hit the region in a five-hour period, experts say. The earthquake swarm began in the northwestern ...