Still trying to pin it exactly...you could be right.
One other place I can think of would be Rawson Pass along the Summit track to Mt. Kozzie.
In the old days (and looking at that Holden/ B+W shot etc) you could drive way past today's turnaround/ parking at Charlottes Pass.....Seamans Hut wasn't around in those days either....parking was on a small dirt patch just a couple of 100m below Mt. Kozzie Summit.