Most volcanic activity happens beneath the ocean — but we often don't know about it. DW looks at how underwater volcanoes form and what happens when they erupt. It's usually the volcanoes we can see ...

This section looks at the relationship between plate tectonics, earthquakes and volcanoes, which helps to explain how volcanoes form. If you look at a map showing the distribution of earthquakes ...

Strictly speaking there are two broad types of volcano, a stratovolcano and a shield volcano, although there are lots of different volcanic features that can form from erupted magma (such as cinder ...