Gotham City Sewers (Earth-1)

Gotham City Sewers is a location in Gotham City.

Batman VS Killer Croc
The Gotham City Sewers were used as a base of operations by Killer Croc, where he stored his own Venom. Batman and Robin tracked Croc down to the sewers and fought him. It turned out that the Venom didn't have the same effect on Croc's physiology as it did on most people, so he was easily defeated by the duo.

Related

 * Appearances of Gotham City Sewers