The town centre stands on a small hilltop, commanding from the southern edge the wide Rieti valley, at the bottom of the Sabine hills and of monti Reatini, including mount Terminillo. The plain was once a large lake, drained by the ancient Romans, and is now the fertile basin of the Velino River. Only the small Ripasottile and Lungo lakes remain of the larger original.
Abruzzo (US: /ɑːˈbruːtsoʊ,əˈ-/, UK: /æˈbrʊtsoʊ/, Italian:[aˈbruttso]; Abruzzese Neapolitan: Abbrùzze[abˈbruttsə], Abbrìzze[abˈbrittsə], or Abbrèzze[abˈbrɛttsə]; Aquilano: Abbrùzzu), historically also known as Abruzzi, is a region of Southern Italy. It has an area of 10,831.84 square kilometres (4,182.20 sq mi) and a population of nearly 1.3 million. It is divided into four provinces: L'Aquila, Teramo, Pescara, and Chieti. Its western border, shared with Lazio, lies 80 km (50 mi) east of Rome. L'Aquila is both the capital city of the Abruzzo region and of the Province of L'Aquila, and is the second largest city. The other provincial capitals are Pescara, which is Abruzzo's largest city and major port, Teramo, and Chieti. Other large cities and towns in Abruzzo include the industrial and high tech center Avezzano, as well as three important industrial and touristic centers, Vasto, Lanciano, and Sulmona.
Abruzzo borders the region of Marche to the north, Lazio to the west and northwest, Molise to the south, and the Adriatic Sea to the east. Geographically, Abruzzo is divided into a mountainous area in the west, which includes the highest massifs of the Apennines, such as the Gran Sasso d'Italia and the Maiella, and a coastal area in the east, with beaches on the Adriatic Sea.
Antrodoco (Sabino: 'Ndreócu) is a town and comune in the province of Rieti, in the Lazio region of central Italy. The name derives from the Latin Interocrea (between the mountains).