When they finally reached Colchis, King Aeëtes had no intention of handing over the Fleece. He demanded Jason perform "impossible" tasks: yoke fire-breathing bulls, plow a field with them, and sow dragon’s teeth that sprouted into an army of warriors.

Jason didn’t go alone. He assembled the "Avengers" of the Bronze Age—the . The roster included: Heracles (Hercules) , the strongest man alive.

The voyage was a gauntlet of mythological terrors. They stopped at the , where only women lived, and nearly forgot their quest in the arms of the locals. They fought the Harpy monsters to save a blind seer named Phineus, who in gratitude gave them the secret to surviving the Symplegades —the Clashing Rocks. These were massive cliffs that smashed together on anything attempting to pass. By releasing a dove first and timing their rowing to the split second, the Argo squeezed through, losing only a piece of its stern ornament. The Witch and the Fleece

The Argo itself was hauled onto the shore of the Isthmus of Corinth as a monument to the greatest voyage ever made. Years later, a weary, elderly, and forgotten Jason sat beneath the rotting hull of his old ship. As he sighed over his lost glory, a piece of the weathered timber—perhaps that same prophetic oak from Dodona—broke off and fell, striking Jason on the head and killing him instantly. Even in its decay, the Argo had the final word.