969 - Danes prepared

Queen Thyra inspecting Dannevirke
Dannevirke was reinforced to prevent a German invasion.
Conquest of Bulgaria by Sviatoslav I of Kiev, a ruler that was trained by a Varangian named Asmud.
Olaf I of Norway was born.
Harald Greycloak of Norway died.
Ívar returned to Limerick and re-established his supremacy, he killed Beolan Littill and his son, and re-established his rule on the larger islands of the Shannon river.
Karlegat, Dannevirke picture from 1913

Dannevirke model at Karlegat
Map of Dannevirke without the eastern wall