Proceeding thence southwards, we find in succession the Monte Vettore (8128 ft.), the Pizzo di Sevo (7945 ft.), and the two great mountain masses of the Monte Corno, commonly called the Gran Sasso d'Italia, the most lofty of all the Apennines, attaining to a height of 9560 ft., and the Monte della Maiella, its highest summit measuring 9170 ft.
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.
The picturesque valley of the Tordino is here dominated by the peaks of the Gran Sasso d'Italia.
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.
Messina was the birthplace of Dicaearchus, the historian (c. 322 B.C.); Aristocles, the Peripatetic; Euhemerus, the rationalist (c. 316 B.C.); Stefano Protonotario, Mazzeo di Ricco and Tommaso di Sasso, poets of the court of Frederick II.
GRAN SASSO D'ITALIA (" Great Rock of Italy"), a mountain of the Abruzzi, Italy, the culminating point of the Apennines, 95 60 ft.
Abbate, Guida al Gran Sasso d'Italia, Rome, 1888).
Above Locarno is the romantically situated sanctuary of the Madonna del Sasso (now rendered easily accessible by a funicular railway) that commands a glorious view over the lake and the surrounding country.
The most westerly, Castello Grande or of San Michele, belonged to Uri; the central castle, that of Montebello, was the property of Schwyz; while the most easterly castle, that of Sasso Corbaro, was in the hands of Unterwalden.
By the time of Augustus its population had actually fallen behind that of the Aquae Caeretanae (the sulphur springs now known as the Bagni del Sasso, about 5 m.