The Central Auxilary Operations Dams are arch-gravity dams that connect to the northern and southern areas of the Historic District of Metropolis.
Retaining the ocean surrounding Metropolis' city-proper, the dam connects with the Metropolis Hydro Plant and Water Treatment Facility.
In-Game History[]
Learning that Brainiac is intending to invade the magical realms, Doctor Fate(Heroes) or Circe(Villains) takes the new hero/villain to enter Limbo via the C.A.O. Dam in Metropolis with the goal of pushing Brainiac's forces out of the realm.