Strabo, Geography

Now the Aetolians and the Acarnanians border on one another, having between them the Acheloüs River, which flows from the north and from Pindus on the south through the country of the Agraeans, an Aetolian tribe, and through that of the Amphilochians, the Acarnanians holding the western side of the river as far as that part of the Ambracian Gulf which is near Amphilochi and the temple of the Actian Apollo, but the Aetolians the eastern side as far as the Ozalian Locrians and Parnassus and the Oetaeans. Above the Acarnanians, in the interior and the parts towards the north, are situated the Amphilochians, and above these the Dolopians and Pindus, and above the Aetolians are the Perrhaebians and Athamanians and a part of the Aenianians who hold Oeta. The southern side, of Acarnania and Aetolia alike, is washed by the sea which forms the Corinthian Gulf, into which empties the Acheloüs River, which forms the boundary between the coast of the Aetolians and that of Acarnania. In earlier times the Acheloüs was called Thoas. The river which flows past Dyme bears the same name as this, as I have already said,¹ and also the river near Lamia.² I have already stated, also, that the Corinthian Gulf is said to begin at the mouth of this river.³