An interim report from the fourth (1998) season of the Billown Neolithic Landscape Project, investigating the early prehistory of the southern part of the Isle of Man. Here, the findings from the excavation of various parts of the site, along with artefact studies and analysis are outlined and preliminary interpretations of the evidence are made. The methodology and results of geophysical, geochemical and fieldwalking surveys are presented. Through adopting a landscape-based approach, the relationships between various sites and finds are being defined in both time and space.