How did MWPP make the Maunderer's Map?

[allies426]

No: HPFGUIDX 154214

--- In HPforGrownups at yahoogroups.com, "houyhnhnm102" <celizwh at ...> 
wrote:
>>>>>>>>
Oh, I like this. I had assumed the RoR was simply unplottable for
magical reasons, but the fact that Lupin could not see inside 
Hagrid's
hut has been nagging at the back of my mind. I hadn't really looked 
at
the missing spaces altogether before.
......
Maybe they did have to actually be in an area to put it on their map.
A rat would have been an ideal form in which to sneak around the
castle.
......
Why doesn't the Shrieking Shack show up on the Map though?
......
I was really convinced by the argument at LiveJournal (referenced by
Marion) that the Map is a Dark object.
>>>>>>>>

Allie:

I don't think they would necessarily have to have been *inside* a 
place (e.g. Slytherin Common Room) to map it, but they would have to 
know where it was.

The Shrieking Shack isn't on the Hogwarts grounds.

Can someone repost that link or email me offlist?  I wouldn't be 
surprised at all if the Map is a dark object, but I don't think that 
the Marauders intended it that way.  Maybe it acquired a life of its 
own through their advanced magic.  Or maybe someone intentionally 
corrupted it later - we don't know where it was before Filch had it.