Emphasizes core and foundational navigation skills using a compass and map Expanded sections on how to use GPS and other technologies Each chapter includes a full set of practice problems For thirty years, Wilderness Navigation has been the official textbook used in outdoor education courses across the country, with more than 150,000 copies sold. This fourth edition continues to provide an excellent manual on the essential tools and proven techniques of top-notch navigators, while also incorporating the latest innovations in navigation technology and trends.New material details guidance on using GPS and other satellite-based navigational products, updates the types and availability of topographical maps, and notes changes in magnetic declination. The authors, seasoned navigators with decades of experience teaching and mountaineering, continue to refine material for clarity, accuracy, and to address suggestions from readers.