Based on one of the most studied cases of volcanic activity, this book synthesizes the comprehensive research conducted for twenty-five years since the eruptions of Mount St. Helens. Research from geology as well as plant and animal ecology has been integrated into a complete, long- term study of the effects of volcanic activity. The authors contribute first-hand knowledge of this significant event, and its aftermath in the natural history of the earth. Questions about what actually happens when a volcano erupts, what the immediate and longterm dangers are, and how life reasserts itself in the area are discussed in full detail.