By the late first century BC, most of north-west Europe had been incorporated into the Roman Empire or had fallen under its shadow. This has profoundly affected how the late Iron Age is perceived and studied. Being able to view peoples and places through written sources and coin inscriptions means that the archaeology of the period is often approached very differently to those discussed in previous chapters, with greater emphasis on historical events and causality. The chronology encourages this. Late La Tène sites on the Continent can now be dated to within a generation or so, anchored by a growing number of dendrochronological fixed points (Kaenel 2006; Durost and Lambert 2007), although similar precision is rarely attainable in northern Europe or in Ireland and northern Britain, which rely largely on radiocarbon dating. The prevailing narrative for the late Iron Age in central Europe, Gaul, and southern Britain—essentially the areas that later became part of the Roman empire—is one of increasing hierarchy, social complexity, political centralization, urbanization, and economic development. These changes are seen as bound up with increasing contact with the Mediterranean world, leading up to the Roman conquests of the first centuries BC and AD. This is contrasted with the situation in northern Britain, Ireland, and ‘Germanic’ northern Europe, which are assumed to have been more tradition-bound and resistant to change. As we shall see, recent excavations do not necessarily contradict this narrative, but they do suggest that the picture is far more complex. Not all developments can be fitted into the story of growing social complexity, whilst to assume that Roman expansion was the most important factor at work at this period is to see events through the eyes of Classical writers (Bradley 2007). It is important to understand late Iron Age societies in their own terms, rather than just as precursors to provincial Roman societies. Many influential approaches to the period—from core–periphery models to the current emphasis on the agency of client rulers (Creighton 2000)—suffer from teleology as a result of having been constructed with half an eye to explaining the pattern of Roman expansion.
Survival after trepanation—Early cranial surgery from Late Iron Age Switzerland