The Map, the Twins, the Rat? (Why is there a passage to Honeydukes anyway?)

[vmonte]

No: HPFGUIDX 98165

Annemehr:

The map did show Harry how to get into the secret passage into 
Honeydukes, but I took that as more of a charm than a password that 
would be periodically changed.


vmonte responds:  

Why is there a secret passage that leads to Honeydukes anyway?  It 
seems strange that there is a passage there.  Who made it?  The map 
only points it out, but who originally made it? and why? Was there a 
different place of business there previously? If people can use it to 
get out of Hogwarts couldn't someone from the outside be using it to 
get in as well? 

vmonte