South West Adventure Trail is a route sheet that Chook and I and other DSMRA members made that links Portland , Casteron, Nelson, Portland (a loop) back in the 90's.
Some sections have overgrown though lack of maintenance.
It runs through areas that have change to National Park status and some plantations that have changed ownership.
It is no longer on the net, but I have it on my home PC. If you want a copy PM me. We take no responsibility is taken if you decide to use this information.