By the tomb room, I'm guessing you mean the room with the heads and swords.
This is another room, where I think you can make a mistake that pretty much ends the game for you. So be sure to save the game before trying anything (as we all will have learned by now).
The room is also consistent with the rest of the logic in the game... Pay attention to everything
EDIT - I can't believe I beat Auntishoque in replying to this post