A master cartographer and teacher, Armin Lobeck provides a clear, accessible guide to discerning the geological history of an area through an understanding of the lines of rivers, mountains, and coasts found on maps. He presents commonplace physical features that map users normally take for granted as a collection of cartographic detective stories. After pointing out patterns that call for solutions, Lobeck assembles clues and leads his readers through thoughtful, carefully crafted explanations, to show how to grasp the history of the earth through the art of map reading.