The barn looks like it has one wall that has been partially replaced on the side facing the edge of the ranch. It looks as if a hole was created in the wall and shored up quickly with whatever wood was around. The wall looks functional, but it lacks the structural integrity it should have if it were crafted as a whole unit. Replacing entire the wall would be difficult due to the fact that it is a load bearing wall, so the fact that the repair is somewhat patchwork is understandable.