BBC World Service

Last updated: 30 september, 2009 - 14:33 GMT

Animated guide: Volcanoes

http://www.bbc.co.uk/worldservice/lg/science/2009/09/090930_volcanoes_guide.shtml

© BBC 2014

You might also like:

news | sport | weather | worklife | travel | future | culture | world | business | technology