I have to be honest... I am not sure what you are asking here. Are you wanting more info on the Whispering Cairn? If so it is highlighted in two adventures in the path. Not sure what you are looking for though.
Sean Mahoney
There's a giant green devil's face carved on the wall with a wide open mouth, almost like a portal of some sort. It's so dark inside the mouth that even the dwarf cannot see through. Nevertheless, brave adventurers that you are, you step through and -
Oh, wait. Wrong dungeon.
I might be mistaken here, but are you a player in the AoW campaign? If so, you shouldn't be asking questions like that here - you'll just spoil the story for yourself and others at the table.
If you are in fact the DM for the game... perhaps you need to be more specific. As the DM running it, you do have the issue the Whispering Cairn is contained in, right? (that would be a bit of a problem, I'm thinking, if you didn't.)