The first group extends as far as the isthmus formed by the gulfs of South Eufemia and Squillace; it is known as the Sila, and the highest point reached is (the Botte Donato). The forests which covered it in ancient times supplied the Greeks and Sicilians with timber for shipbuilding. The railway from South Eufemia to Catanzaro and Catanzaro Marina crosses the isthmus, and an ancient road may have run from Squillace to Monteleone. The second group extends to the south end of the Italian Peninsula, culminating in the Aspromonte () to the east of Reggio di Calabria. In both groups the rivers are quite unimportant. Finally, the Calabrian southern Apennine Mountains extend along the northern coast of Sicily (the Sicilian Apennines, Italian "Appennino siculo")—Pizzo Carbonara () being the highest peak.