AMMAN — Capitolias was one of cities of the Decapolis with Gadara (Umm Qais) and Gerasa (Jerash), and it is located some 10km north of Irbid. The modern name of Capitolias is Beit Ras and the theatre and underground Roman tomb remain main structures from the ancient period. Capitolias was planned as a Roman castrum under emperors Nerva and/or Trajan in 97-98AD. And the name of