How do volcanoes erupt? What happens when lava cools? Where are the volcanoes located? This fun-and-fact filled book answers these questions and more. Follow Volcano Vulcan, Dragon Explorer, to discover the science of volcanoes in an informative way.Prager, Ellen J. is the author of 'Volcano ', published 2007 under ISBN 9781426300912 and ISBN 1426300913.