I tried to follow the spirit until my mapping started to path back over itself. About an hour and some change into it, I couldn't keep telling myself it would all be over in 1 more line.
You can see though the largest area that the spirit roams, and the main section that he zigs and zags through. It's a little SW of the posted -500, -5300. Both will work, just I think the pathing is more frequent in the other location.