Borrering, Archaeological site in Zealand, Denmark.
Borrering is a circular Viking fortress in Zealand with a diameter of 145 meters. The ramparts measure 10 to 11 meters wide and were reinforced with wooden stakes, while the gate openings on the north and east sides remain visible.
The fortress was built around 980 AD as part of a network of military installations in Denmark. These structures served to control trade routes and secure the region during the Viking Age.
The site reveals how Vikings planned and used their defensive structures strategically. The visible remains show what daily life and military organization looked like during this period.
The site lies near Køge and is easily accessible on foot, with the exposed structures visible throughout the year. Convenient paths lead around the site, allowing views of the circular layout and gate openings from different angles.
Rather than traditional moats, the site relied on natural water barriers: the Ellebækken stream and a small lake formed the defensive perimeter. This shows how Vikings adapted their surroundings for protection.
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