This is a remarkably lucid book. Peter Wilson writes of the shaping of the landscape with all the enthusiasm of a craftsman describing his work. The landscape is constantly before him, every aspect of its shape and texture is the result of a distinct process or action, nothing has just happened. He wants the reader to understand in all its technical detail exactly what has happened, why the landscape is in the form it is. Next time you are on the fells, thanks to Peter’s enthusiasm, you will be able to identify protalus ramparts and sorted circles and non-sorted relief stripes. It all adds interest to a day’s walking.