Ancient Campania
Ancient Campania (often also identified as Campania Felix or ager Campanus) originally indicated the territory of the ancient city of Capua in the Roman period, and later also the plains of the various neighbouring municipalities. It was a very large territory when compared with the other Italic cities of the Roman and pre-Roman period.
It extended from the slopes of Mount Massico (to the north) up to the Phlegraean Fields and the Vesuvian area to the south. Initially it also included the ager Falernus, then it was heavily downsized by Rome due to the alliance of the city of Capua with Hannibal.
The main inhabited centers of this historical region were (from north to south) Capua, Atella, Liternum, Cumae, Baiae, Puteoli, Acerrae, Nola, Neapolis, Caprae, Oplontis, Pompei, Sorrentum, Stabiae, Nuceria Alfaterna and Salernum. Thanks to the fertility of the soil, also due to the presence of the Volturno river, it earned the name of Campania Felix.