Last week I realised that the majority of my photographs were not in focus and I could not determine what the problem was so eventually I had no option but to reset the camera which was annoying but everything now appears to be OK.

When I first saw this a few years ago I was advised that it was not an art installation and that it was in fact part of an expensive ventilation system.
As I liked these dark blocks I began to believe that it was a modern sculpture and then one day I saw a notice nearby indicating that it was “8 Limestones” by Ulrich Rückriem.