The Cracked Wall is an entity in Baldur's Gate 3. It exists in the Moonrise Towers section and can be found on the main and interacted with after using a ladder to climb up to the rafters. If interacted with, the player will have the option to reach inside which will prompt a series of skill checks. If the checks are failed or if the player chooses to submit, the party will be pulled into the wall and transported to the Oubliette.