Columbia subject headings:
Archaeology, Medieval.
Danewerk (Schleswig-Holstein, Germany)--Antiquities.
Excavations (Archaeology)--Germany--Haithabu (Extinct city)
Haithabu (Extinct city)
Vikings--Germany--Haithabu (Extinct city)
Harvard subject headings:
Archaeology, Medieval.
Excavations (Archaeology)--Germany--Schleswig-Holstein.
Germany (West)--Antiquities.
Schleswig-Holstein (Germany)--Antiquities.
Princeton subject headings:
Danewerk (Germany).
Excavations (Archaeology)--Germany (West)--Haithabu (Extinct city).
Excavations (Archaeology)--Germany (West)--Schleswig.
Fortification--Germany (West)
Germany (West)--Antiquities.
Haithabu (Extinct city)--Antiquities.
Schleswig (Germany)--Antiquities.