Glaciers in sunny California? Many people will be surprised to learn that there are several hundred in the state, ranging in size from the impressive Whitney Glacier on Mt. Shasta and the Palisade Glacier in the Sierra Nevada to tiny glacierets. While California's glaciers are small compared to those in the northern Rockies or the European Alps, each one is interesting and some are suitable for exploring. Also of note is the fact that Ice Age glaciers carved California's most spectacular mountain scenery - the High Sierra was glaciated several times and glacial landforms are prominent features of the Sierran landscape today. Bill Guyton summarizes the history of the discovery of Ice Age glaciation and modern-day glaciers in California, as well as the development of modern ideas about the state's glacial history. He describes the controversy about the origin of Yosemite Valley and quotes from the colourful accounts of early mountain explorers such as John Muir, Josiah Whitney and Francois Matthes. His book provides a primer on glaciers and glacial landforms, a glossary of technical terms, illustrations, and a 100-mile Sierra field-trip-guide for readers who want to see glaciers and glacial features for themselves.