|Gotham City Sewer System|
|Official name:||The Sewer System of the City of Gotham|
|First Appearance:||The Knight of Gotham Trilogy|
|Country:||United States of America|
|Locale:||Gotham City (TJLMS)|
In 1925, the Sewer System was built beneath Gotham City and the surrounding areas. However, the sewer system was built ABOVE the Lazarus Pit and beneath the Batcave.
In later years, a mother left her child in the sewers due to his appearence.
Batman heads to the Sewers where he fights againest Killer Croc, the same child that was left in the sewers.