Brilliant Shrieking Shack Interior
The New Marauders
The Marauder's Map was created by James Potter, Remus Lupin, Sirius Black, and Peter Pettigrew - known collectively as the Marauders - while attending Hogwarts. Combining their knowledge of Hogwarts castle and its grounds with a Homonculous Charm, they were able to track the location of everyone in the castle. With the aid of this enchanted parchment, the Marauders were able to safely sneak out with Remus for his monthly werewolf transformations and make untold amounts of mischief.