A river on the Peloponnesian Peninsula.
During the Trojan War, A generation before the Trojan War, the armies of Pylos and Arkadia faced one another by the rivers Iardanos and Keladon, in front of the city of Pheia. Nestor of Pylos fought a duel with a formidable warrior named Ereuthalion. Nestor won the fight. Ereuthalion was the tallest and strongest man Nestor ever killed.
| References: Homer, Iliad book 7, line 135 |