Looking a bit grubby

Another boring but unmuddy walk which brought us home via S----S carpark (in spite of what a store manager once thought, it has a public footpath across it). It was busier than I've seen it since last March, if each car had contained only one person the store must have been heaving inside.
Doing the same urban walk several times means that you soon run out of "blippertunities", Redilady has already used the other end of this subway.
I was rather surprised to see that this Artwork(?) has survived six years, just getting grubbier.