A magical effect on a place; makes it impossible to plot its location on a map.
References from the canon
- Hermione suggested that this may have been done to make Durmstrang and Beauxbatons harder to locate by other witches and wizards (GF11).
- Hogwarts also has wards and spells on it to hide its true nature from Muggles, but it is apparently not Unplottable.
- The Room of Requirement is Unplottable, so that it doesn't appear on the Marauder's Map (HBP21).
- Number twelve Grimmauld Place is Unplottable (OP6).
Magic Type Concealment