[Photo Challenge]

This is the thread for any comments that you would like to make about any of the submissions in this month's Photo Challenge.

Additionally, if you have any shots that you have taken on the subject, but didn't quite "make the cut", you can share them on this thread too.

This month's theme is "Metal"

NB:
Just to let you know, in the next two months I will be travelling in the outback, often with limited coverage. So bare with me and be patient if I am a bit late administering this challenge.