AESERNIA (mod. Isernia)  , a Samnite town on the road from Beneventum to Corfinium, 58 m. to the north-east of the former, at the junction of a road going past Venafrum to the Via Latina . These routes are all followed by modern railways—the lines to Campobasso, Sulmona and Caianello . A Roman colony was established there in 263 B.C . It became the headquarters of the Italian revolt after the loss of Corfinium, and was only recovered by Sulla at the end of the war, in 8o B.c . Remains of its fortifica-tions are still preserved—massive cyclopean walls, which serve as foundation to the walls of the modern town and of a Roman bridge, and the subterranean channel of an aqueduct, cut in the rock, and dating from Roman times .