1911 Encyclopædia Britannica/Collatia
COLLATIA, an ancient town of Latium. 10 m. E. by N. of Rome by the Via Collatina. It appears in the legendary history of Rome as captured by Tarquinius Priscus. Livy tells us it was taken from the Sabines, while Virgil speaks of it as a Latin colony. In the time of Cicero it had lost all importance; Strabo names it as a mere village, in private hands, while for Pliny it was one of the lost cities of Latium. The site is undoubtedly to be sought on the hill now occupied by the large medieval fortified farmhouse of Lunghezza immediately to the south of the Anio, which occupies the site of the citadel joined by a narrow neck to the tableland to the south-east on which the city stood: this is protected by wide valleys on each side, and is isolated at the south-east end by a deep narrow valley enlarged by cutting. No remains are to be seen, but the site is admirably adapted for an ancient settlement. The road may be traced leading to the south end of this tableland, being identical with the modern road to Lunghezza for the middle part of its course only. The current identification with Castellaccio, 2 m. to the south-east, is untenable.
See T. Ashby in Papers of the British School at Rome, i. 138 seq., iii. 201.(T. As.)