A recently discovered series of tar pits, the Basin City government saw it as a way to capitalize on tourism and turned it into a park. After the release of a 'big budget dinosaur movie' (a probable reference to Jurassic Park) revived interest in dinosaurs and fossils, the Basin City government spent thousands of dollars rigging up impressive dinosaur statues. This proved to be successful until an elderly woman fell into a pit and had a heart attack from panic. The negative publicity shut down the Pits for good.
Criminal Dumping Grounds
The Pits' commercial failure didn't stop Sin City's criminal element from finding a new use for them. Soon, it became the go-to place for dumping dead bodies, from Dwight McCarthy trying to hide the evidence of Jackie-Boy's death (The Big Fat Kill) to petite assassin Delia, who used it as a place to seduce her first official victim (Wrong Turn).
- The Pits are obviously inspired by real-life locations such as the La Brea Tar Pits.
- Frank Miller has admitted the main reason the Pits exist is as an excuse to draw the dinosaurs.