A summary/translation of an article by Håkan Lindgren in SvD (Svenska Dagbladet) 24 april 2013
In Norse mythology the Fimbulwinter is connected to the Fenris devouring the sun. Many sources speak of the year 536 as a strange year when the sun was veiled. (actually , i would argue it is his son Sköll devouring the sun.).
All this seized in the mid 500´s.Less finds, the sun discs, assumed to be connected with a sun cult, disappear from stones at Gotland and instead the stones are filled with warlike Aesir, as if the sun had fallen from grace.
Picture stone from Hablingbo, Havor. Dated to Iron Age.
There is not enough written or archeological material to make any final assumptions about the reactions of the people of the 500´s according to Gräslund.
Did they co operate or did it start an all out war on all fronts?
The Edda songs speak of “axe times” when not even parents or siblings spared eachother.
According to Anders Andrén, proffessor of archeology at the university of Stockholm several people from Norse mythology where historical people.
Sigurd Fafnirbane was the Burgundian king Sigibert, dead 439.
Tjodrik from the Roek stone is the Ostrogothic king Theodrik, dead 526.
Perhaps the time before 536 appeared as a lost golden age and its old kings became mythic heroes.
So where was the actual eruption?
The latest theory is Ilopango in El Salvador.
If this happened today we would at least have the benefit of understanding what happened. In those days it was understood as “the sun might never regain its power” according to Mikael Syriern quoted by Gräslund.
What known volcano is most likely to produce similar results if it erupted today. A number of Swedish geologists all answered “Yellowstone, U.S.A.”.
Agence France Presse