Sicily (Tyrrhenian) and Messina-Catania-Syracuse (Ionian). Of the narrow-gauge railways the Ferrovia Circumetnea is the only one that still operates, going round Mount Etna. From the major cities of Sicily, there are services to Naples and Rome; this is achieved by the trains being loaded onto ferries which cross to the mainland. In Catania there is an underground railway service (metropolitana di Catania); in Palermo the national railway operator Trenitalia operates a commuter rail (Palermo metropolitan railway service), the Sicilian Capital is also served by 4 AMAT (Comunal Public Transport Operator) tramlines; Messina is served by a tramline. Mainland Sicily has several
Geology of Sicily well as the regional uplift of the Calabrian unit. The tectonic setting of Sicily is controlled by the rate of collision of the African plate and Eurasian plate and the rate of back rolling of the African plate. The tectonic history of Sicily can be divided into four main stages: During Late Triassic, the ancient Neotethys ocean was formed by a major continental rifting event and rapid tectonic subsidence. Traces of the tectonic event can be found at both the Hyblean plateau and western Sicily. After the rapid subsidence during Triassic to Early Jurassic, there was a slow thermal subsidence