WalterEgo thank you so much for reporting this Bridal creeper, which is a Weed of National Significance!
I have been visiting the site yesterday and dug out an over 1 square meter mat of tubers (see the 3.rd photograph that I added). I bagged the tubers and any other material. I wonder whether it is safe to depose off in my rubbish bin or whether it needs to be burned.
the site is clearly a garden waste dumping site. There are several garden dumping sites in the vicinity all around the trunks of large trees. The source is a garden just about 200m to the west at Mackenzie Street. The previous owner extended his garden into nature reserve and abused the nature reserve regularly for dumping garden waste. I reported the dumping and garden extension several times over the past years.