![](http://www.alamy.com/thumbs/6/D0D2401F-726A-465E-950E-B3C3FE35FF8A/2A3CCE6.jpg)
Tunnels of the underground system of the Great War in the Austro Hungarian stronghold of Mount Testo. Pasubio massif, Trentino, Italy.
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Photo credit: © Andrea Contrini / Alamy / Afripics
License: Licensed
Model Released: No
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