Volcanic eruption caused Neolithic people to sacrifice unique 'sun stones'

4,900 years ago, a Neolithic people on the Danish island Bornholm sacrificed hundreds of stones engraved with sun and field motifs. Archaeologists and climate scientists can now show that these ritual sacrifices coincided with a large volcanic eruption that made the sun disappear throughout Northern Europe.
Read more: Volcanic eruption caused Neolithic people to sacrifice unique 'sun stones'