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

River Styx In Greek mythology, Styx (; grc, Στύξ ) is a river that forms the boundary between Earth (Gaia) and the Underworld. The rivers Acheron, Cocytus, Lethe, Phlegethon, and Styx all converge at the centre of the underworld on a great marsh, ...

Greek mythology A major branch of classical mythology, Greek mythology is the body of myths originally told by the ancient Greeks, and a genre of Ancient Greek folklore. These stories concern the origin and nature of the world, the lives and activities o ...

according to

Hesiod Hesiod (; grc-gre, Ἡσίοδος ''Hēsíodos'') was an ancient Greek poet generally thought to have been active between 750 and 650 BC, around the same time as Homer. He is generally regarded by western authors as 'the first written poet i ...

’s description in

Theogony The ''Theogony'' (, , , i.e. "the genealogy or birth of the gods") is a poem by Hesiod (8th–7th century BC) describing the origins and genealogies of the Greek gods, composed . It is written in the Epic dialect of Ancient Greek and contain ...

. It is located near Nonakris in the Aroania Mountains of

Achaia Achaea () or Achaia (), sometimes transliterated from Greek as Akhaia (, ''Akhaïa'' ), 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. T ...

on the Peloponnesian peninsula. 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 ( grc, Ἀλέξανδρος, Alexandros; 20/21 July 356 BC – 10/11 June 323 BC), commonly known as Alexander the Great, was a king of the ancient Greek kingdom of Macedon. He succeeded his father Philip II to ...

in 323 BCE.

References

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