- "Something's blocking connection back to the Batcave."
When he was a young boy, Bruce Wayne found an underground cave system that was located below his home at Wayne Manor and it was useful when his parents died and Wayne swore to fight crime. It was his secret base of operations as Batman. It housed the Batmobile, the Batwing, the Batcomputer, and Batman's many other gadgets.
As the game took place on Arkham Island, Batman could not access the Batcave. However, he had the foresight beforehand to build a second Batcave underneath Arkham in case such an event arose.
After the events of Batman: Arkham Asylum, Batman (as Bruce Wayne) was incarcerated in Arkham City. During Protocol 10, Professor Hugo Strange's TYGER Guards attacked Wayne Manor and were able to find the Batcave. They were defeated by Nightwing, Robin, and Alfred. Sometime later, The Riddler sent a group of thugs to Wayne Manor to test Batman, but they were easily beaten by him.
- The Wayne Manor Batcave was only featured in the Challenge Map Pack DLC in Batman: Arkham City.