One-Eyed Witch Passage

According to the Marauder’s Map, there are a total of seven secret passages in Hogwarts that allow students to sneak in and out of the school. Among them are the One-Eyed Witch passage, which is found behind the one-eyed witch statue by the stairs to the Defence Against the Dark Arts classroom. The passage is opened by tapping the wand on the statue and speaking the password, Dissendium. It leads to Honeydukes Sweet Shop in Hogsmeade by way of a tunnel under the school.