The Marauder's Map

[finwitch]

No: HPFGUIDX 130669

"flyingmonkeypurple":
 > I was just re reading the third book and I was thinking how it 
shows 
> all of Hogwarts. After Harry and Hermione use the time turner and 
are 
> just sitting and waiting to rescue Black. Woudn't the Marader's Map 
> show them on the map. If the invisibility cloak can be detected so 
can 
> time travel. both Lupin and Snape saw the map. 

Finwitch:

They would - if someone watched the map while both Harrys & Hermiones 
were within the Hogwarts grounds showing on the map.

However, Hagrid's hut is NOT on the map  -- and as for Wormtail: 
while he stays on Hagrid's hut, Remus can't see him on the map AND no 
cats around (given that Hagrid is allergic to cats)...

I'd say they weren't on the map most of the time. (except the HHR in 
the hospital wing or going there).

Also -- I'd say that neither the Chamber of Secrets nor the Room of 
Requirement are on it - since you need to be a parselmouth to enter 
the former and Sirius apparently didn't know of the latter. But any 
room the Marauders had found...

Finwitch