Rivers of the Greek underworld

In Greek mythology, Styx (; ; lit. "Shuddering"), also called the River Styx, is a goddess and one of the rivers of the Greek Underworld. Her parents were the Titans Oceanus and Tethys, and she was the wife of the Titan Pallas and the mother of Zelus, Nike, Kratos, and Bia. She sided with Zeus in his war against the Titans, and because of this, to honor her, Zeus decreed that the solemn oaths of the gods be sworn by the water of Styx.

The Acheron ( or ; Acheron or Ἀχερούσιος Acherousios; Acherontas) is a river in the Epirus region of northwest Greece.

In Greek mythology, Lethe (; Ancient Greek: Lḗthē; , ) was one of the rivers of the underworld of Hades. In Classical Greek, the word lethe (λήθη) literally means "forgetting", "forgetfulness". The river is also known as Amelēs Potamos, or the "river of unmindfulness".

Cocytus or Kokytos (, literally "lamentation") is the river of wailing in the underworld in Greek mythology. Cocytus flows into the river Acheron, on the other side of which lies Hades, the underworld, the mythological abode of the dead. There are five rivers encircling Hades: the Styx, Phlegethon, Lethe, Acheron and Cocytus.

In Greek mythology, the river Phlegethon () or Pyriphlegethon (, ) is one of the five rivers in the infernal regions of the underworld, along with the rivers Styx, Lethe, Cocytus, and Acheron.

river mentioned in Greek mythology