BBC NEWS | Americas | Colombia's Galeras volcano erupts

BBC NEWS | Americas | Colombia's Galeras volcano erupts
One of Colombia's largest volcanoes erupts, spewing huge amounts of ash and
sulphur fumes.

What happens when volcanoes erupt?
The best way to describe what happens when a volcano erupts is to shake a bottle
... When a volcano erupts, magma bursts out. Dust, gas, steam and hot rock ...