The Watershed of Scotland is a line that separates east from west—a ridge that meanders 754 miles from Peel Fell on the English border all the way to the top at Duncansby Head, through almost every kind of terrain—and determines whether a raindrop will join the flow toward the North Sea, or west toward the Atlantic. The Watershed follows the high ground, and offers wide vistas down almost every major river valley through the heartlands of Scotland. Peter Wright has walked every step of these fells, and here leads the reader through breathtaking, largely unknown landscapes, providing valuable advice for walkers on the way.