Orb Shows Up Above A Strange Image on a Tree

I just wanted to share this unusual photo with you that I took on the evening of July 19, 2012 in a park across the street from an old mission that dates back to the 1700s. Do you see the image on the tree that's on the left? I'm not sure what exactly the "being" is on the tree. I'm guessing it's faded graffitti or a natural aging pattern on the tree. It's barely visible when you're actually looking at the tree. In fact, I didn't even notice it until the image showed up in the picture and I walked over and inspected the tree more closely and then I saw it faintly outlined on the tree trunk. It shows up much more vividly here in the second picture than it actually is. What I thought was really interesting is that one orb showed up in this picture...directly above that image. Coincidence or was someone trying to point it out?