Location: Somewhere in the heart of the labyrinth of passages in the dungeons.
Entrance: In a bare, damp stone wall. A concealed door slides open when the correct password is given.
General: The Slytherin common room is a low, long room with rough stone walls and ceiling. Round green lamps, hung from the ceiling with chains, light the room. In front of the door is a fire-place with an elaborately-carved mantelpiece. Carved chairs are dotted around the room.