resort town and seaport on the western coast of the volcanic island of Ischia, Campania region, southern Italy. It is the centre of a productive wine-making region. The wine is called Epomeo for Mount Epomeo, the extinct volcano that is at least partially responsible for the island's fertile volcanic soils. Forio—like Casamicciola, Lacco Ameno, and other cities on Ischia—has thermal mineral springs and is a popular vacation site. Pop. (2002 est.) 14,572.