Metallic abstract

I spotted this metal box in a wall just as I was about to take a photo of the shadows of branches.  I have no idea what it's for, but remembering it was Abstract Thursday, I thought the scratches and marks on the box would work.   I initially blipped just the box without the extended branch shadows then decided I liked this one better, almost like an abstract within an abstract.  I added the original as an extra.  
Thanks to youoregon1 for continuing to host Abstract Thursday.