Thank you. It would surprise me if there were hundreds of people camping in those several square kilometres adjoining Wonnangatta Station proper on the night Russell and Carol vanished. It's very remote and somewhat difficult of access. However, perhaps that's something I did read and didn't take in. There may have been more at Howitt Plains where they apparently camped the previous night; not quite so remote. But even if there were two hundred people near the station, say an average of three people per camp, maybe seventy campsites, it still isn't going to be at all crowded in an area that size. I suppose Russell might have left some equipment there from the week before--though I understood he was around the King Billies, not in the river valley--but it's improbable he made the long trip, maybe five hours each way, for that purpose of setting up a tent which would be a comparatively quick exercise. Remember too that he ended the transmission to his friend saying that he hadn't set up the site yet.I have updated my post explaining, hope this helps! I am trying to keep my mind open to all possibilities, not rule anything out at this stage. Seeing their ruined camp site is very sad, as it seems they were going somewhere that held fond memories for RH and where they thought nobody would see them - and they would not risk embarrassing RH's wife, but this proved to be a deathly mistake.
I hope I've understood you better this time.