CA´LLIUM or CALLI´POLIS(Κάλλιον, Paus. 10.22.6; Καλλίπολις, Pol. ap. Steph. B. s. v. Κόραξ;Liv. 30.31: Eth. Καλλιεύς), the chief town of the Callienses (οἱ Καλλιῆς, Thuc. 3.96), was situated on the eastern confines of Aetolia, on one of the heights of Mt. Oeta, and on the road from the valley of the Spercheus to Aetolia. It was by this road that the Gauls marched into Aetolia in B.C. 279, when they surprised and destroyed Callium, and committed the most horrible atrocities on the inhabitants. (Paus. 10.22.) Calliumn also lay on the road from Pyra (the summit of Oeta, where Hercules was supposed to have burnt himself) to Naupactus, and it was divided by Mt. Corax from lower Aetolia. (Liv. 30.31.)