Aimed at the burgeoning adventure travel market, this book focuses on hikes, treks and walks that explore some of the earth's most spectacular wild places, and particularly natural wonders such as volcanoes, glaciers, unique rock formations, rivers and great lakes. This book is not aimed at expedition-type trekkers. Although some of the places are remote, all have basic visitor infrastructure, with option for a variety of walking trips. Destinations are drawn from all over the world including North America and Asia, with a significant proportion of European destinations.