Flame Pipe
Template:Bowsermap The Flame Pipe is one of the areas inside Bowser's body allowing him to breathe fire and it is most likely located somewhere in his lungs.
When Bowser sees something that can be destroyed by fire in Cavi Cape, he tries to breathe fire, but he fails and cannot, due to a giant Scutlet plugging his Flame Pipe. Later in the game, Mario, Luigi, and Starlow encounter this giant Scutlet blocking the Flame Pipe, preventing Bowser from breathing fire. The giant Scutlet will stick out his tongue at Starlow to suck her in its body and Mario and Luigi must fight him to retrieve Starlow back. When Mario and Luigi defeat the Scutlet, they will obtain Starlow back and Bowser will have the ability to breathe fire again, allowing him to burn down trees, etc.