Coal mine of Hasard Cheratte, Belgium.
Amazing shot! And the colors are good.
Amazing shot, great detail.
Fantastic photo. I really love the composition and the colors.
It appears to be Black and White until you see the tiny spot of blue at the top of the shaft. Wonder point of view.
Wow. Great! Love the symmetric lining and the light.
you have done amazing work
It seems like I was looking into a deep dark hole...very impressing!