l4d2. it's from a magazine cover. Wallpaper and background images in the left 4 dead 2 club tagged: left 4 dead 2.
Submitted by Blue_Vanilla
it's from a magazine cover (Source: valve)
This left 4 dead 2 photo might contain
abattoir, butchery, shambles, slaughterhouse, by catch, bycatch, tuna, and tunny.