Unlock the secrets of nature with The Walkers Guide to Outdoor Clues and Signs - a comprehensive and unique resource providing over 850 clues and signs found in the land, sun, moon, stars, trees, plants, animals, sky and clouds. This invaluable guide, written by experienced outdoorsman Tristan Gooley, draws on two decades of exploration and six years of instruction, research, and writing to offer an unparalleled guide to natural navigation for walkers.