Acheron, a river of Thesprotia in southern *Epirus which breaks through an impenetrable gorge into the Acherusian plain where a lake (named Acherusia) lay in ancient times. The river empties into the Ionian Sea at the ancient Glycys Limen (or ‘sweet harbour’). Homer (Od. 10. 513) describes the Acheron as a river of *Hades into which the Cocytus and Pyriphlegethon streams flow, the place where Odysseus consulted the spirits of the Underworld (Od.11). Herodotus (5. 92. 7) mentions a death oracle (nekyomanteion) by the banks of the river where one called forth dead spirits for consultation. Remains of such an oracle have been excavated near Mesopotamo (see
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