Columbia subject headings:
Excavations (Archaeology)--Germany--Mayen.
Fortification, Roman--Gaul--History.
Fortification, Roman--Germany--Mayen.
Gaul--Antiquities, Roman.
Katzen Mountain (Rheinland-Palatinate, Germany)--Antiquities, Roman.
Mayen (Germany)--Antiquities, Roman.
Mayen (Germany)--Buildings, structures, etc.
Harvard subject headings:
Excavations (Archaeology)--Germany--Mayen Region--History.
Fortification, Roman--Germany--Mayen Region--History.
Fortification--Gaul--History.
Mayen Region (Germany)--Antiquities, Roman.
Princeton subject headings: