Now in its 4th edition, the accessible introduction to vulcanology returns, combining excellent science with clear language and true stories. Enlivened by first-hand descriptions and stunning photographs, this new edition now has three new chapters on Volcanoes in the solar system, the Pinatubo Volcano and the Yellowstone National Park. There has also been detailed updating throughout with greater coverage of calderas, all-new coverage on Mount St. Helens and the introduction of a new companion website.