Describes in detail 100 active volcanoes around the planet including information on; the geodynamic environment leading to its formation, structure, special features, morphology, method of eruption, and the materials erupted. Also includes directions to each volcano for travellers. Describes the 5 basic types of volcano: Island-Arc, Hot-Spot, Ocean-Ridge, Continental-Margin, and Continental-Rift volcanoes. Addresses predicting eruptions and how to minimize the risks posed by them.