I'll give you an example. When I worked in Auckland, there was a piece of land that had once been a quarry and it was owned by local council. It was owned by local council. It had once been a quarry and they said, "We're no longer going to dig rock out of it; we've got all the rock out. I know what we'll do, we'll turn it into a reserve and we'll let the birds come back and we'll let the bush come back." Well, that's fantastic, except a short time later another part of council said, "We've got hundreds of thousands of cubic metres of surplus fill we need to get rid of. We can either pay commercial rates or we can put it in the old quarry that we used to operate that you've now called a reserve." Well, after some years of exploring the option, it was deemed impossible, because it would have required if not an Act of Parliament almost—just to get permission to backfill that quarry with surplus fill. Actually, it would have delivered a better environmental outcome and a better asset for council, because rather than a big dangerous hole in the ground with rocks falling into it that no one could use; it was actually fenced off, it could have been made into a level site and repurposed for alternative community uses.