This map was drawn for Order of the Phoenix MUSH and posited the locations of various features of the grounds of Hogwarts School of Witchcraft and Wizardry and various game-based items in Hogsmeade. The map was based on maps published on the Harry Potter Lexicon website, only to find out later that the location of Hogsmeade is actually supposed to be northwest of the castle, not near the station (which makes no sense, but she's the author, and it was her map that said it was northwest).
The map was drawn and inked by hand, then colored in with Photoshop.