The last two photos are a bit unusual, especially the last one. What looks like white smears, is not a reflection caught by the camera lens. It's possible that it may be a white pigment that was smeared across the rock, but it was not visible at the time I took the photograph. If you are a fan of the SYFY channels “Ghost Hunters” you could make out all kinds of things from this photo. I have to admit when I got home and was downloading the photos to my computer and saw this one it intrigued the crud out of me. I checked all the photos before and after these looking for dirt on the lens, but found none. Also a flash was not used inside the shelter.