Ada Tree Loop Walk (approx four days). I notice you can walk out of Warburton on the Upper Yarra Track (aka Walk into History). It takes approx two days to reach the Ada Tree Reserve. You can walk back via Short Cut Rd, Oat Patch Track, Platts Creek Rd and the Richards Tramway Walking Track (a similar distance). See Rooftops Adventure map Yarra Valley-West Gippsland. This should make for a most enjoyable 3-4 days in the near Gippsland forest.