Next to the rough open clearing at control 47, it looks like there is some yellow on dark green (maybe my eyes aren't seeing it right, but that's what I am seeing).
what is that?
47 is located in the center, close to the eastern border, not far from the finish.
I think it is an artifact of converting the ocad file which was used to produce offset printed maps to jpeg for use in RouteGadget. On the offset maps , there is no yellow beyond the clearing.
Indeed, a jpg compression artifact.