 At summer, with the assistance of the locals, they dragged the Argo to the Aquilis river (), which falls into the Eridanus.The Eridanus itself falls into the Adriatic sea.Zosimus wrote that after they left from the Aeetes, they arrived at the mouth of the Ister river which it discharges itself into the Black Sea and they went up that river against the stream, by the help of oars and convenient gales of wind.