Laodamia

Hidden deep within the bowels of the earth and ruled by the god Hades and his wife Persephone, the ancient Greek Underworld was the kingdom of the dead, the sunless, cold and shadowy place where the souls of those who died went after death. The Underworld was watered by the streams of five infernal rivers - The Styx, the river of hatred and unbreakable oaths; the Acheron, the deep river of sorrow and pain; the Cocytus, the river of lamentation and wailing; the Phlegethon, the river of fire which led to the very depths of Tartarus; and the Lethe, the river of oblivion and forgetfulness, out of which the dead souls are obliged to drink to forget their previous lives