There are five rivers that separate Hades from the world of the living, they are:
- Acheron - the river of woe;
- Cocytus - the river of lamentation;
- Phlegethon - the river of fire;
- Lethe - the river of forgetfulness;
- Styx - the river of hate.
It is thought that Charon, the old ferry man who ferries the dead onto the underworld, crosses the river Styx where the dragon tailed dog Cerberus guards, allowing all souls to enter but none to leave. This is a misconception, Charon crosses the river Acheron where also Cerebus stands his eternal guard. Also while on this subject, Charon only takes the souls across that are buried properly with a coin (called an obol) that was placed in their mouths upon burial.
If a god gave his oath upon the river Styx and failed to keep his word, Zeus forced that god to drink from the river itself. The water is said to be so foul that the god would lose his/her voice for nine years. The river is not the subject of any story itself but is mentioned in several. These little pieces give a wonderful view of not only the river but the ancient Greeks view of the underworld. From its Adamantine gates to its separate levels of Tartarus and Erebus onto the Elysian fields.