Hi Don. I agree. Dorrigo being a small mountain town it would be quite possible to track down a lot number or land number matching the name. Getting access and possible permission to dig would be another thing however. If the land has not been built over already.
Your location in NSW brought back memories of the '96 Olympics in Atlanta. My Supervisor at that event was from NSW. We were in a group of several thousand current and former cops that composed the Security Division.
Don.....