Modern art

I hope a fine Christmas was had by all. I have had to rethink my feelings on modern art over the holidays. It's as much a label thing as anything else. In one of my art books there is a dry stone wall sculpture that wends it's way through the forest. I can appreciate it as an ex countryside ranger and as an artist. It is very impressive. The art I have a problem with is like that below:

I'm not sure what it's meant to be or what it's label is (I'd call it simplistic nothingness. But maybe I'm missing something and I am guilty of making little planets