The spectacular scenery of Cornwall & the Isles of Scilly is the result of some 400 million years of geological history. Rock types range from sedimentary mud & sandstones to igneous ones of granite & those of volcanic origin. Local geology can be seen in pebbles on the beach, & in towns, villages & countryside in buildings & hedges. The coast & moors exhibit some of the most dramatic rock exposures, many of them Sites of Special Scientific Interest. This book describes & explains the best sites, & gives a gallery of rock types that may be encountered in Cornwall.