That would probably be one of the green subdivision blocks. Back in the last days of the 2000-2006 rural land price bubble, Neville White (wool producer and all round good guy in regards to allowing orienteering access to his land) sold his least productive blocks (full of lovely granite) to a green developer. Developer cut up the blocks (north and east of Korong) and tried to sell them with conservation covenants to dreamy idealists with more money than sense. He got caught by the end of the bubble. I suspect this the last blocks left unsold, or is someone who has come to their senses and is trying to get out.
We did have plans to map the rest of the granite area on private land around Korong, but this subdivision put an end to that.
Re the more money that sense comment- there is no reliable access to many of the properties (just the Mt Korong access road). There are strict covenants on development that limit the area to be cleared. Any development faces fire risk. No services to speak of from the shire. Its the wrong sort of rural subdivision in my opinion.