Mavronéri (''Greek: “Black Water”'') is a river identified with the

River Styx 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 mothe ...

Greek mythology Greek mythology is the body of myths originally told by the Ancient Greece, ancient Greeks, and a genre of ancient Greek folklore, today absorbed alongside Roman mythology into the broader designation of classical mythology. These stories conc ...

according to

Hesiod Hesiod ( or ; ''Hēsíodos''; ) was an ancient Greece, Greek poet generally thought to have been active between 750 and 650 BC, around the same time as Homer.M. L. West, ''Hesiod: Theogony'', Oxford University Press (1966), p. 40.Jasper Gr ...

’s description in

Theogony The ''Theogony'' () is a poem by Hesiod (8th–7th century BC) describing the origins and genealogy, genealogies of the Greek gods, composed . It is written in the Homeric Greek, epic dialect of Ancient Greek and contains 1,022 lines. It is one ...

. It is located near Nonakris in the Aroania Mountains of

Achaia Achaea () or Achaia (), sometimes transliterated from Greek as Akhaia (, ''Akhaḯa'', ), is one of the regional units of Greece. It is part of the region of Western Greece and is situated in the northwestern part of the Peloponnese peninsula. The ...

on the Peloponnesian peninsula. Its waters contain a significant amount of Calicheamicin, a dangerous compound produced by bacteria. Stanford University scientists Antoinette Hayes and Adrienne Mayor speculate that the waters of the Mavronéri were used to poison

Alexander the Great Alexander III of Macedon (; 20/21 July 356 BC – 10/11 June 323 BC), most commonly known as Alexander the Great, was a king of the Ancient Greece, ancient Greek kingdom of Macedonia (ancient kingdom), Macedon. He succeeded his father Philip ...

in 323 BCE.

References

Greek mythology Landforms of Arcadia, Peloponnese Rivers of Greece Rivers of Peloponnese (region) {{Greece-river-stub