This book is essential reading for anyone venturing above the mountain snowline in either summer or winter. Emphasis is placed on prevention of avalanche accidents through observation, recognition of avalanche terrain and good route-finding, and is reinforced by case histories from Canada, the USA and Scotland. The first edition of 1983 ran through six printings. The second edition not only brings you up-to-date on the latest techniques and equipment, but also addresses the problem of stability evaluation for backcountry telemarkers, snowboarders and extreme skiers.