Styx is a moon.
 Dante, putting Charon and the Acheron at the entrance to Hell, put Phlegyas as ferryman over the Styx and made it the fifth circle of Hell, where the wrathful and sullen are punished by being drowned in the muddy waters for eternity, with the wrathful fighting each other
 According to Herodotus, the river Styx originates near Pheneus

