Figure 1

Map of the study area. Blank map of Europe by commons.wikimedia user Júlio Reis. a) The Limfjord region. Localities mentioned in the text are labelled. b) Detailed map of the Kilen core site. Own work, made with MapInfo Professional 7.8 using bathymetry data by Thorkild Høy, published in [34]. c) Map of the rivers Alster and Trave with the archaeological sites Kayhude/Alster (red cross, marked K) and Schlamersdorf/Trave (S). Main watersheds are indicated by yellow lines (after http://www.erneuerbare-energien.de/files/bilder/allgemein/image/gif/flussgebietseinheiten.gif, Umweltbundesamt, 2004). Map of Schleswig-Holstein by commons.wikimedia user NordNord-West, relief by commons.wikimedia user Lencer.