Orpheus (north east Danube valley) and even describes him wandering into Hyperborea and Tanais (ancient Greek city in the Don river delta) due to his grief. The story of Eurydice may actually be a late addition to the Orpheus myths. In particular, the name "Eurudike" ("she whose justice extends widely") recalls cult-titles attached to Persephone. According to the theories of poet Robert Graves, the myth may have been derived from another Orpheus legend, in which he travels to Tartarus and charms the goddess Hecate. The myth theme of not looking back, an essential precaution in Jason's raising of chthonic Brimo Hekate
Greek underworld would have to follow behind Orpheus and he could not turn around to look at her. Once Orpheus reached the entrance, he turned around, longing to look at his beautiful wife, only to watch as his wife faded back into the underworld. He was forbidden to return to the underworld a second time and he spent his life playing his music to the birds and the mountains. Greek underworld In mythology, the Greek underworld is an otherworld where souls go after death. The original Greek idea of afterlife is that, at the moment of death, the soul is separated from