What is it supposed to be?
I think it is left up to you... I am not going to post my whole interpretation (for fear of being locked up in an asylum), but I will say that there is a man in a construction vest on the left heading into a mine... If I go any further, Onan is bound to return and pronounce me unfit to inhabit this thread.
Of course, I could be completely wrong. I have a few artist friends who ask for my interpretation. Once I tell them what I get, they tell me what they put into it. Often times, it does not match... That is art.