The dry stone walls of Britain happen to be in areas which attract many tourists and so it is not surprising that the walls that are an integral part of the landscape should provoke so many questions. 'When were they built?', 'Who built them?', 'How do they stand up without cement?'. This book answers these and many other questions. The reasons for building dry stone walls, the story of their development, technical details of their construction, regional styles and the state of the craft today. Some old myths and legends are dispelled, in particular the mistaken idea that walling is a dying craft.