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Superstition? Or what caused this?
(sh.itjust.works)
Desire paths Desire paths can be paths created as a consequence of erosion caused by human or animal foot-fall or traffic. The paths usually represent the shortest or most easily navigated routes between origins and destinations. https://en.wikipedia.org/wiki/Desire_path
I don't think it's fear about structural integrity. It looks like you'll hit your head if you keep to the right like many people will. Especially if someone also approaches from the other direction. Maybe also cyclists?