Sant' AntiocoTwin island of S.Pietro, S:Antioco joins the mainland with a bridge.The town was settled on the ruins of the Sulci, Punic town which was invaded by the Carthaginians first, and then by the Romans.S. Antioco has a volcanic origin and this characterizes all the coasts: the beaches are full of pebbles, dark depth and a lavic cliff with black tufaceous rocks.How to get there:From Cagliari follow the roadsigns to Iglesias, strada provinciale 130, after Iglesias go ahead, continue in SP82 Porto Scuso direction, continue in SP75bis Porto Paglietta direction, and then take the boat to S.Pietro island.