If that is a Photoshop fraud, it's avery good one. The edges are pretty clean, the lighting/shadows consistent, no obvious duplication of heads/racks. If somebody did this digitally, they're very talented. Not impossible, but not likely.
I think it a "real world" fraud; shoulder mounted deer intermixed with fresh/whole deer. Stunt deer.
As stated before, not a speck of blood anywhere, no tongues hanging out, no "glowing" eyes, andmany of the heads are unnaturally "erect" (it's not cold in that picture, so the deer aren't frozen).
Add to this, to harvest 27 mature shooter deer in one season would have to require multiple 1000s of acres, or a deer farm
. The normal limit in Minnesota is 1 buck per year (regardless of method). There's a bonus tag system, but I
think that is only for antlerless deer (I could easily be wrong on that).
-nosualc