Geograph - photograph every grid square

On the busy pedestrian route across the footbridge over the Canning Half-Tide Dock, towards the Museum of Liverpool, tourists might be greeted by this distracting prospect - the product of their own kind. Every kind of bottle jammed in any convenient aperture that the capstan structure offers. Of course, the remaining contents has now turned to a thick sewage green. Looking down to the ground, the prospect was even worse - a high heap of broken glass, takeaway cups and rotten food, trailed around the base of the capstan and being carried by the wind towards the river. Given that most of us would never even dream of treating the docks with such disrespect... who does this, I must wonder? And the locks, too...

All this unpleasantness is countered by the distinctive skyline of Birkenhead.