The Map (Blocked Passage)

[probonoprobono]

No: HPFGUIDX 98221

> Finwitch:
> 
> Maybe, maybe not. We do know it was large (considering Sirius 
> suggested it for DA), and that Fred&George say it's all caved in. 
I 
> think that it'd take quite a lot to get something that large to 
> get 'caved in' - what happened to it? Is that event somehow keyed 
to 
> why the Twins stopped using it? Were they, perhaps, on their way 
when 
> the roof fell in?
> 
> I wonder, did it have anything to do with how, on the passageway 
to 
> Chamber of Secrets, roof falls in and blocks both Ron and Lockhart 
> from it!

Probono:

I just always assumed that these 2 passages were connected somehow 
and both led to the chamber. After the collapse there is another 
door that Harry has to get through using parseltongue. Fred and 
George wouldn't be able to get into the chamber or probably even 
recognize the solid wall as a door to a chamber. I just figured the 
other passage runs past the chamber and onto Hogsmeade.