For wilderness travellers, good navigation ability can mean the difference between a successful day hike and an unplanned overnight stay. Based on the curriculum of the National Outdoor Leadership School, "NOLS Wilderness Navigation" gives you the skills you need to confidently find your way on and off the trail. Included here are methods for orienting yourself by the sun and the stars alone, easy-to-follow explanations of map and compass techniques, and advice on using an altimeter. There is also a comprehensive section on using GPS technology-without becoming dependent on it. Exercises at the end of each chapter help readers gradually develop their skills and build their confidence.