This volume presents the results of four excavations, three in Norfolk (Tilney St Lawrence, Nordelph and Downham West) and one in Lincolnshire (Morton), of Romano-British routeways constructed some time before the 3rd century AD. Data from the sites, which comprise canals, roads and especially the Fen Causeway crossing the southern Fenlands, are discussed in turn and the final chapter draws some more general conclusion as to their function, chronological sequence and their roe in the development of the area in Roman times.