Slytherin Dungeon

Slytherin Dungeon is located behind a wall in the cellars of Hogwarts School of Witchcraft and Wizardry. A password is required to enter it, spoken to the wall. A circular hole is behind the painting, leading to the common room, which is a low-ceilinged, dungeon-like room with greenish lamps and chairs. It is located under the lake.

The Gryffindor dormitories are also located in the Dungoen, with two doors leading off from the common room that open to spiral staircases. One of them leads to the girls dormitory, the other to the boys. The stairs to the girls dormitory are enchanted to become a slide if any boy attempts to climb them, but not vice versa since it was deemed that girls were more trustworthy than boys.

Appearances

 * Harry Potter and the Chamber of Secrets (First appearance)