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
Eridanos (river of Hades) with the excavations for construction of the Athens Metro. Eridanos is the name that has been applied by geologists to a river which flowed where the Baltic Sea is now, a river system also known simply as the "Baltic River System". Eridanos (river of Hades) The river Eridanos or Eridanus (; , "Amber") is a river in northern Europe mentioned in Greek mythology and historiography. Hesiod, in the "Theogony," calls it "deep-eddying Eridanos" in his list of rivers, the offspring of Tethys and Oceanus. Herodotus suspects the word "Eridanos" to be essentially Greek in character, and notably forged by some