Just found out through my research that Damian Murphy has since passed away. I think I have a name for possible contact. Whether this person knows anything of the history of accessing Big Hill is unknown at this stage. I do think it is important though to do the right thing and discuss future visits and how we can lessen any conflict as the only way you can access the crown land is through the private. I will chase this up, but in the meantime if anyone is planning a visit, maybe consider giving it a wide berth until I have some concrete news on the best way to move forward/continue with access.
I didn't realize that the original poster had posted this in May and the reason the thread was up was due to someone querying chopped bolts. kubepau - I gather you didn't run into any of the owners or managers of the place?