This work is part of the "Exploring Scotland's Heritage" series which provides an introduction to the archaeological heritage of Scotland. Each book tells the story of one part of Scotland, tracing human impressions on the landscape from World War II relics back to the earliest pioneer days of settlement. The details are filled in by a gazetteer of interesting and well-preserved monuments. This volume looks at the archaeological heritage of Orkney, and examines the defences of the last World War back through windmills and water-mills, houses and castles, Viking-age churches and iron-age brochs, to the well-preserved houses and tombs of people who lived more than 5000 years ago.