freebeer
I cannot even see, with ESRI at zoom 19, that these residential roads exist, and if a rough track exists, it certainly does not follow all the mapped data.
Certainly Lesieur Lane, a gravel track, turns back east to connect with E.Wallum Lake around 123 metres east of where mapped, near your marker here.
I am tempted to try and trace from ESRI z19, but that does not help with the names (the roads I cannot make out) nor the actual access when unclear -- almost seems the old trackbed ballast is used for access.
My view from my armchair, on the floor