I'm not trying to steal Swishy's thread. This isn't a quiz; I don't know the answer. I have inherited five deceased estates, and this comes from the one where I know the least. It came via an intermediary.
The two views are from the start of the film which continued to a Lakes Entrance (Vic.) holiday.
The photographer was a Melbourne resident.
Between these and the lakes there are a few camping in bush: mountain foothills, near a river.
My first thought was a Snowy dam. This isn't the road: this is a walkway, and apparently not simply one side of a road bridge, and probably on top of a dam.
I used Google Earth to check Glenmaggie, but the width is wrong, and the fencing is wrong.
Moondarra isn't a boating lake; Thomson hadn't been built.
He could have come via Tumut, Eucumbene and the Bonang, but almost certainly was towing a caravan, with a boat on the car roof. He would also have taken more photos.
This isn't prime material for this group, but viewers here have more skill at funny places than those on any other group to which I subscribe.
The two were taken in Mar.69, as the opening two in a film.
I've solved one other mystery from that film, which I could run as a quiz, but there is no point.