Google Maps had no coverage of this area at the time when the guide was compiled. As Google Maps seems to be a bit more capable now, I have updated the guide to reflect. It is available from the same URL as before.
The textual directions were previously correct despite the ‘locality map’ drawing including an incorrect end-point.
In any case, if you would like to see the new Google maps directions, go for maps.google.com/maps?f=d&hl=en&geocode=318984311589606327,-31.072440,118.235240&time=&date=&ttype=&saddr=-31.495433,118.226624&daddr=Lake+Brown+South+Rd+%40-31.072440,+118.235240&mrcr=0&mrsp=0&sz=10&mra=dme&sll=-31.267987,118.24585&sspn=0.889749,1.450195&ie=UTF8&z=10&om=1