Concangis

Concangis was a Roman auxiliary fort in Britannia Inferior, located in modern Chester-le-Street, County Durham, England. Measuring approximately 165 by 152 meters (about 6.25 acres), it was first built in timber around the 70s AD by the Legio IX Hispana, then reconstructed in stone by the Legio II Augusta in the early 2nd century. The fort occupied a strategic bluff overlooking the Wear valley and Cong Burn. Its garrison included the Ala II Asturum (a cavalry wing documented building aqueducts and bathhouses c. 216 AD) and later the Numerus Vigilum, a watchmen's company recorded in the 4th-century Notitia Dignitatum. Excavations in 1978 and 1990-91 yielded pottery, coins, altars dedicated to Mars, Apollo, and Celtic deities Digenis and Vitiris, and a notable proportion of dedications by veteran soldiers. Much of the fort lies beneath the modern town.