The marker on the map is where you can get a 4wd to, it is possible though to drive all the way to the pink ribbon, but it's gonna test your 4wd's maneuverability. A normal car can get to the end of the straight new gravel logging road quite easily.

Go up to the 'south sister lookout' road, (There are signs from 'top marshes' road in St. Marys) and follow that until you get to a straight new gravel logging road (Should see it pretty clearly on the satellite map) IGNORE THE ROAD OUTLINES ON THE MAP FROM THIS POINT. Go along that and at the END of it there's a dirt 4WD track to the left - Stick to that track until you get to a T junction, go left, about 150m or so there will be a track on the left (where the marker is) which almost U-Turns back on the track you just came along, go down it 'til you get to the first right (about 30m).

Now follow that track and about 40m before the dead-end there should be a pink ribbon on the left side of the track, go into the bush where the pink ribbon is and that is the downhill track.

If you can't find the ribbon then you haven't gone far enough. (Easiest way is to just go to the end of the track then come back about 40m and keep an eye out for that ribbon)

When you get to the 4wd track at the bottom turn right, and follow it until you get to the next 4wd track, go left and follow that into Cornwall.

need more info or details?? send me a message, photos available.