Mysterious bullet holes and blood on wall

This is one of the most intriguing thing I've ever seen. I was
playtesting my single player map when I noticed some bullet hole and
blood decals on a wall that couldn't possibly have gotten fired on by
anything or anyone. No player or NPC could even possibly get to
that part of the wall, which is three levels above ground.
Nothing is even nearby.

I just cannot figure out how the decals got there. Any ideas?

It doesn't really affect the game in any way, but I just think it's a very strange problem.

Well, show us some screenshots!

I could, but the screenshots won't be too helpful. Because they
just look like your normal bullet hole decals and blood stains on the
wall.

There's nothing unusual about their appearance. It's their
location that's the mystery. And by showing the screenshots, it's
pretty meaningless. Because unless taken in the context of the
gameplay, you wouldn't know that it's impossible to get those bullet
holes at those places.

Maybe your map is haunted?

I remeber that you had some grunts ready to repell on your map, and
that if you went to the top floor and looked over the edge then you
could see these two combine guys just... hanging there. Maybe
their gun discharged.

or seriously it could be that decals are getting onto the back of a
wall from the inside. like you shoot a bad guy, he dies, blood
splats onto a wall, and shows up on the back face of that wall.
Dont ask me why, but it could be that.

Well its not hard to put up screenshots, and that thing ure talking about is realy cool. Noone will be able to help you anyways.

it could be that decals are getting onto the back of a
wall from the inside ...

That's the best explanation. Because there's some action going on
from the other side of the wall (the interior of a room). But why
would the decal appear on the outside wall? Must be a bug from
the rendering engine.

its just how decals sometimes do things. I could be fixed but its not really a huge deal. With diffrent brush work It should fix itsself.

nope, hes wrong, I'm sticking with the first guy, your map is haunted....OOOOOOO!

nope, hes wrong, I'm sticking with the first guy, your map is haunted....OOOOOOO!

blarg!