Archaeologists are uncovering the mysteries of a Viking-age fortress at Borgring, on the island of Zealand in eastern Denmark, which is thought to have been built late in the 10th century by the Danish king Harald Bluetooth.
Credit: Peter Jensen/Aarhus University
The discovery of a Viking-age fortress in Denmark has shed new light on a network of military sites built by the 10th-century Danish king Harald Bluetooth, according to archaeologists.
Bluetooth — for whom the eponymous digital network technology is named — is credited with building several large, circular fortresses, or "ring forts," around Denmark in the 970s and 980s, as he unified the unruly Viking clans of the region into a centralized kingdom.
Until a few years ago, the sites of four such ring forts were known, and in the decades since they were found, debate has raged among Danish historians about these structures' purpose. [See More Photos of the Viking-Age Fortress in Denmark]
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