Moving away from the highly regionalised and constrained purely humanistic and empirical studies of hillfort location and morphology, this study is a multi-regional GIS-based analysis of the form and siting of several groups of hillforts across Britain. Hillforts in Dartmoor, Aberdeenshire, The Gower and Warminster are assessed, four regions that are topographically diverse. The highly varied topography of these regions also tests the GIS-basis of this study, another important intrinsic aspect of this novel research. GIS-based analysis has never before been applied to a study of hillfort location and morphology to this degree and, as with any innovative methodology its worth has to be tested and assessed. List of Contents Volume 1 Abstract i Preface iii List of Contents iv List of Figures xi List of Tables xxxi Chapter 1: Setting the scene: An introduction to hillfort 1 studies and their influence on a GIS-based v Current focus of the investigation……………………………………...42 Method of investigation………………………………………………...43 The basis of viewshed calculations…………………………………….44 Visual distances…………………………………………………………45 Multiple point viewsheds…………………………………………….....48 The visual representation and management of viewshed results……...