Catacombs Beneath Castle Brunwald (Last Crusade)

A subterranean labyrinth beneath Castle Brunwald in Indiana Jones and the Last Crusade (S1E3), filled with petroleum, rats, and the Grail Knight’s coffin—a critical plot device for the Grail quest. The catacombs are ignited by Nazis, introducing fire and flood hazards, and interact with Indy, Elsa Schneider, Henry Jones Sr., and Kazim.