![](http://www.alamy.com/thumbs/6/C8C2E5C1-320E-4A42-8F87-C0707613E6B1/2B7Y1AC.jpg)
Round concrete underground tunnel of heating duct system with rusty pipes
Round concrete underground tunnel of heating duct system with rusty pipes.
Size: 5472px × 3648px
Photo credit: © Vladimir Zapletin / Alamy / Afripics
License: Royalty Free
Model Released: No
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