A 72-metre ice core drilled in the Colle Gnifetti Glacier in the Swiss Alps Captured over 2000 years of fallout from volcanoes, storms, and human pollution.
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The Documentary Evidence
Procopius writing in 536 AD 1 states “during this year a most dread portent took place. For the sun gave forth its light without brightness … and it seemed exceedingly like the sun in eclipse, for the beams it shed were not clear”The Annals of Ulster: Describes “A failure of bread in the year 536 AD”
The Annals of Inisfallen: Describes “A failure of bread from the years 536–539 AD”