Hey there, and wow what a long username, I'm gonna call you "HYG" for short, okay? Let me offer you a hearty :welcome: to Websleuths, I am sure you'll find a lot of interesting posts here, and a lot of Aussie crimes among them. I've heard/read several locals saying the exact same thing - that the Wellard place was somewhere only a local with detailed knowledge of the area would travel in and out of.. My thought for many years now was that he very well could have been visiting the bodies from time to time. It's certainly not an unusual thing to happen, in crimes like this, particularly where the bodies are left in remote locations easily visited without too much scrutiny. I reckon, if he didn't leave the state and continue killing elsewhere, then he's gone into hibernation because the heat got too high.