The swastika design is known from artefacts of various cultures since the Neolithic, and it recurs with some frequency on artefacts dated to the Germanic Iron Age, i.e. the Migration period to Viking Age period in Scandinavia, including the Vendel era in Sweden, attested from as early as the 3rd century in Elder Futhark inscriptions and as late as the 9th century on Viking Age image stones. The swastika symbol in the Germanic Iron Age has been interpreted as having a sacral meaning, associated with either Odin or Thor.