THE HUMPEDBACK WITCH STATUE SERVES AS A PASSAGE TO HOGSMEADE, STUDENTS USE MOST OF THESE EMPTY CLASSROOMS FOR SNOGGING PARTIES AND PROFESSORS FOR DETENTION. THERE IS ONE CORRIDOR THAT IS STRICTLY FORBIDDEN DUE TO THAT PESKY POLTERGEIST PEEVES. ALSO WE HEARD THAT THE MIRROR OF ERISED IS SOMEWHERE AROUND HERE TOO.