Returned to the site of sighting 4379924 with tapirlord. It’s unfortunately to see that the plants have recolonised part of the walkway and have climbed the tall trees along it. Hopefully this can be dealt with but it may be hard as most of the vine is on private property.
@MichaelMulvaney pretty much as Ned says, I'm pretty sure parks and conservation undertook control here a year ago. But regardless it is out with avengence.