Underworld

A long time ago, the original Mr. Peanut wasn't satisfied with what he had, so he decided to open a crack in two realities with his evil, godly powers. That crack today is called the pit. After he opened the pit, it created a crack where the pit now is today in the temple that you now know. After the original Mr. Peanut went through the crack, it caused his world to be unstable, and get infected. Almost two years later, the pit seemed to have an infection that caused a portal to get into the old temple.