Despite this, the Burslem Port Trust's volunteers have carried on campaigning and looking after the site, making sure that things didn't get built over the line of the canal and keeping it as clear as possible of thick weed growth.
Last Friday, Polar and Grizzly went to help, taking their wheelbarrow and some tools, and I went along too. In the autumn of last year, with the help of the Waterway Recovery Group, a new path was laid alongside the route of the lost canal and, since then, the volunteers have been tidying up around it, clearing old bricks and rubble into piles so people don't trip over them.
They have also started building some "dead hedges" out of trimmed branches, where lots of insects and small mammals can make their homes. It's a great way to do landscaping, as it saves the pollution and fire-risk of burning scrub that has been cut back, and can be used to mark out paths and make other features, like the maze at Westport Lake.
After exploring the little bridge, it was time to make our way along the new path to where Grizzly and the other volunteers - Mr David and Mr Alan - were hard at work. They were using some of the rubbly bits to fill in along the sides of the path, then packing soil around that to make the edges all neat and safe.
The new path doesn't yet go all the way to the canal, although there is a rough path that carries on that way, so I asked Polar if we could go and look at it and she agreed.
It was not too far, at least for a small bear being carried in the Bear Bag. The canal was quiet and still, with no boats on the move, so we sat for a few moments imaging what it would look like of there was a canal junction here.
On the way back, we had a good view of the valley that the canal runs above. Some people assume this was the canal, but the canal was on the left side of the path as you head away from the main line of the canal, while the valley is on the right.
Polar and Grizzly and their friends worked hard for a couple of hours, breaking up the piles of spoil and packing along the path edges and, by the time they stopped, quite a lot was done.
Polar saved this nice little piece of floor tile that she found, so we could take it home to show the other bears. I wondered what sort of building it had come from, what that had looked like and who had lived there or worked there.
"Will we come again?" I asked, as Polar wheeled me and the tools back towards the car.
I made some new friends from the Middleport Matters community group, who would like me to visit their "hub" one day, to show grown-ups and human cubs how to make bear clothes out of old human clothes and jumpers for small stuffies from socks. I asked Polar is she thought Endon Bear would let them have some of his spare special tomato plants for their Root and Fruit allotment, and she said she was sure he wouldn't mind.
Polar was given a Burslem Port bag by the Trust and some eco-friendly, plastic-saving things for doing the laundry and keeping the house clean, by the Middleport Matters people. When Grizzly arrived later by bus, he had a cup of tea with us all, then we gave Tracy and Jen from Middleport Matters a lift back to their hub on our way home.