New discovery could rewrite Viking fortresses' history

Pottery shards question conventional understanding of Denmark’s Viking ring fortresses.

The Vikings: A Memorable Visit to America, History

Discovery Could Rewrite History of Vikings in New World

Vikings - Wikipedia

3,000-Year-Old Grave of Charioteer Could Rewrite Siberian History

New discovery could rewrite Viking fortresses' history

Vikings in North America: Could new discovery in Newfoundland prove it was more than a brief stay?, by Tony Costin, The History Fix

New Viking Age Ring-Shaped Fortress Discovered In Denmark

Ancient Viking Fortress Reveals 'Fierce Warriors' Were Decent Architects

The Viking Coast and Alnwick Castle

Viking Fortress in Denmark Dates Back to the 10th Century