Bridget,
I know the site, I lived in the area for 2 years. So I think I have an idea of how you took the image and at what angle. Here is my take on what you've captured, and mind you its a personal educated opinion nothing else.
First I do fully trust its an unaltered photo, I can tell that from the header information. However, I'm not seeing much paranormal in the picture. I've enhanced the brightness and labeled some areas.
On the left you'll see the front facing wall.
Then directly beside that is a protruding rock on the side of that wall.
In the recessed area towards the back are stone wall features and some rocks on the ground.
To the left you'll see marked in purple that you've captured a fairly sizable rat. Quite disgusting but not paranormal.
The only thing I really find of interest is those bright dots in the center. I circled them in orange. Possibly reflective materials on the ground, hard to tell. They're not dust orbs. Can't really tell what they are.