During his residence in Thrace he joined the expedition of the Argonauts, whose leader Jason had been informed by Chiron that only by the aid of Orpheus would they be able to pass by the Sirens unscathed.
It was there that they placed the scene of the sufferings of Prometheus (vide Aeschylus, Prometheus Vinctus), and there, in the land of Colchis, which corresponds to the valley of the Rion, that they sent the Argonauts to fetch the golden fleece.
On the arrival of the Argonauts, Phineus promised to give them particulars of the course they should pursue and of the dangers that lay before them, if they would deliver him from his tormentors.
ARGONAUTS ('Apyovavrat, the sailors of the "Argo"), in Greek legend a band of heroes who took part in the Argonautic expedition under the command of Jason, to fetch the golden fleece.
Here the Argonauts remained some months, until they were persuaded by Heracles to leave.
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