I think that some of that mess is from bullet holes, because I saw shells, and un-used bullets in the sand/dirt below the route. There was this kind of markings on other rocks too where I believe people were shooting a 22. I was a little worried about using the anchors because of the cord tied to the hangers then through rings. The cord looked like it was in good shape around the hangers so that gave me confidence. After I saw that I wasn't going to bounce on it or do anything wild when rapping down that was for sure. What would you have done?
I placed the cord seen in the photo. Fall of 07. Replaced a bunch of old crap. Not the best placed bolts imo because when you rap you are basically pulling outward on the bolts. That is why I wanted everything well equalized which I did. If in doubt, one can walk (with a belay perhaps) 30 feet left to the anchors on Melanoma Shuffle seen here:
I don't believe we are seeing bullet holes. This wall doesn't directly face the ground. IMO, bullet shots would show some signs of that angle. When I was there looking closely, these holes appeared more like failed attempts at drilling anchor holes as the holes are relatively perpendicular to the rock surface. I'm no forensic scientist, though.