The fens of eastern England form a very distinct environment which produced particular patterns of prehistoric occupation. This account of the discovery and excavation of the now world-famous Bronze Age site near Peterborough begins with an overall survey of the archaeology of the area and then describes the first farmers of the Neolithic period and the houses and habitations of the early Bronze Age. Flag Fen, with its massive timber platform and an avenue of posts with votive deposits, dates from the later Bronze Age. Dr Pryor's reassessment of the site concludes with a brief look at the Iron Age, the coming of the Romans, and the modern destruction of this precious landscape.