

Also, it did not seem to show unplottable rooms, as it was Dobby and not the map that revealed the existence and location of the Room of Requirement. One of the map's possible flaws was that it did not differentiate people who had matching names (the shared names were not given a Junior or Senior at the end). It was also capable of accurately identifying each person, and was not fooled by animagi, Polyjuice Potions, or invisibility cloaks even the Hogwarts ghosts were not exempt.

Not only did it show every classroom, every hallway, and every corner of the castle, but it also showed every inch of the grounds, as well as all the secret passages that were hidden within its walls and the location of every person in the grounds, portrayed by a dot. The Marauder's Map was a magical document that revealed all of Hogwarts School of Witchcraft and Wizardry. THE MARAUDER'S MAP" - The Marauder's Map Purveyors of Aids to Magical Mischief-Makers

" Messrs Moony, Wormtail, Padfoot, and Prongs
