![](http://www.alamy.com/thumbs/6/D38F4748-56BE-40EC-8E25-123DF44E9869/2BCRTJ8.jpg)
ancient tunnel in Cheile Nerei National Park
Size: 3000px × 2000px
Photo credit: © coroiu octavian / Alamy / Afripics
License: Royalty Free
Model Released: No
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