Founded by Salazar Slytherin, these rooms are found in the cellars of Hogwarts. A low-ceilinged, dungeon-like roomis packed with greenish lamps and chairs. These common rooms are rumored to be partway under the black lake, explaining the dimmer light that reveals the grand atmosphere. These rooms are filled with those who are selfish, cunning, and will 'use any means to achieve their ends'.
