4 Founders, 4 Elements, and Secret Rooms

[Tonks]

No: HPFGUIDX 155416

I am wondering about the 4 founders of Hogwarts, the 4 elements and 
secret rooms.  We know that Slytherin created the Chamber of Secrets 
and the passage there was through the water which is the element of 
Slytherin.  And we have the Room of Requirement. We don't know who 
created it, when, or why.  Some here have suggested that is was done 
by Ravenclaw.  I guess this could be possible perhaps because of the 
connection of name RR and RR for the room. It might also be a 
Gryffindor room since it was DD that found it first, if I remember 
correctly. 

I am wonder if each of the founders has a secret room in the 
castle.  Each room would be associated with the element of that 
house.  If is theory is correct, what element would the Room of 
Requirement be associated with?  And what would be Hufflepuff?  The 
Womping Willow and the secret passage under it?? (Looking for 
something of the earth here.) And we need fire for Gryffindor and 
air for Ravenclaw.

Remembering that there is a fifth element in British Wizardry and 
that is Love or Spirit. So there could actually be 5 rooms.

Any thoughts??

Tonks_op