In the northernmost courtyard of the castle is a pond with a large boulder that recognizes the handprint of every Horned Serpent student. When touched, the boulder opens to reveal stairs down to the Horned Serpent House. The common room is located under the pond; glass ceilings let the pond above act as a water skylight. Two very long hallways lead off the common room, leading to the boys' and girls' dormitories. First year dorms are the farthest down the halls.
