The image was used in a 2017 article at https://scienceworld.scholastic.com/issues/2016-17/011617/icy-ascent.html?language=english https://scienceworld.scholast

The image was used in a 2017 article at https://scienceworld.scholastic.com/issues/2016-17/011617/icy-ascent.html?language=english https://scienceworld.scholastic.com/issues/2016-17/011617/ic... and with the same artifacts so digitization must have been before then.