Finding Harald Bluetooth's fortress

In September 2014, archaeologists from the Danish Castle Centre and Aarhus University were waiting expectantly for the outcome of carbon-14 dating which could determine whether or not the Viking ring fortress, located west of Køge, Denmark, could have been built by King Harald Bluetooth.

The announcement of the fort's age was made at Aarhus University in November 2014.

"Now we know, without any doubt, that what we found is a tenth century fortress," says museum curator and archaeologist Nanna Holm of the Danish Castle Centre. "It's too early to say whether it was Harald Bluetooth's Castle. However, the things we have discovered about the fortress, during excavations, all point in this direction," says Søren Sindbæk, Professor of Mediaeval Archaeology at Aarhus University.