Above them; while the upper valley of the Aterno, in which Aquila is situated, is 2380 ft.
Still more elevated is the valley of the Gizio (a tributary of the Aterno), of which Sulmona is the chief town.
Thus the Gran Sasso and the Maiella are separated by the deep valley of the Aterno, while the Tronto breaks through the range between Monte Vettore and the Pizzo di Sevo.
They may be enumerated, proceeding from Rimini southwards: (1) the Foglia; (2) the Metauro, of historical celebrity, and affording access to one of the most frequented passes of the Apennines; (3) the Esino; (4) the Potenza; (5) the Chienti; (6) the Aso; (7) the Tronto; (8) the Vomano; (9) the Aterno; (10) the Sangro; (11) the Trigno, which forms the boundary of the southernmost province of the Abruzzi, and may therefore be taken as the limit of Central Italy.
It lies on a hill in the wide valley of the Aterno, surrounded by mountains on all sides, the Gran Sasso d'Italia being conspicuous on the northeast.
PESCARA, a river of Italy, formed by the confluence of the Gizio and Aterno, and flowing into the Adriatic at the small town of Pescara.