What I see in this picture is the light in the upper left, no one had flash lights on and the dark mass to left of the doorway. Now there is another doorway back there but this seems to be in front of the doorway
I've been to Waverly Hills twice and we've had all kinds of personal experiences-shadows walking towards us, a ball rolling down the hallway, orbs (dust, moisture, whatever you want to call them) but not too much hard evidence. I do have a couple of mist pictures I'll post later when I find them.
I am thinking of starting a free banner exchange for anyone with a paranormal website. If you think this is a good idea then let me know. If there is enough interest I'd start it up.