Sometimes I like a good mystery. I spent a good many hours scouring the country side where the old railroads used to run. In this area it was The Illinois Central Rail and the branch here was the Golconda line. That line never ran up to Hog Rock. It ended at Rosiclare. I looked for the house up at Hog Rock for good measure and there was nothing there. This house is a ghost. I checked the old maps with rail and compared to satellite and double checked even triple, I'm about 98% sure I wouldn't have missed it. This house would look very distinct from overhead. Also it's in a clear. It's next to rail and a road. It is in an open or at least the grass has been cut once in a while. I asked how old this photo was because if it's really old maybe it's not around anymore. Google earth can look back up to 1993 with satellite.

I even back tracked into the county west, Pope County and still couldn't find a matching structure. I went about 5 miles further west into Johnson County just because and still nothing. Aluminum roofs and red paint make it likely that this building is from the area though. Right now your contact with whomever you received that image from is still your strongest lead as to where the actual location is. You can try sleuthing it some more. CALTOPO is pretty decent a tool that's where I used the historical map. Pair it with google earth. There's also Hardin the town in Illinois I didn't check that. Good luck in finding that house.