This one, downgraded to track; I'm reluctant to mark as access=private. Yes, it is slathered with no access signs on the ground; but it's still (despite no council answers) marked as an unmade road reserve on resources like SAPPA, which prompted me to go explore this originally - track is what I downgraded it to to better reflect this.

Annoyingly stuff like:
https://wiki.openstreetmap.org/wiki/Further_guidance_on_tagging_Public_Rights_of_Way_in_the_United_Kingdom#Impassable_or_blocked_PRoWs isn't much help.
Finally, the only council documents I can find are 2018 minutes around https://www.apc.sa.gov.au/__data/assets/pdf_file/0029/356933/AGENDA-PUBLIC-COPY-Special-Council-Meeting-26-March-2018.pdf which seem to indicate at least the northern end is considered "a road"; or was at the time.

I'd be happy with visibility=basically none + barrier access=no I guess?
