![Coen Tunnel](https://c1.vgtstatic.com/thumb/1/3/134413-v1/coen-tunnel.jpg)
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![Col de Tende - Italian Portal](https://c1.vgtstatic.com/thumb/1/3/134405-v1/col-de-tende-italian-portal.jpg)
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![Col de Tende Road Tunnel](https://c1.vgtstatic.com/thumb/1/3/134166-v1/col-de-tende-road-tunnel.jpg)
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![Corliss Tunnel](https://c1.vgtstatic.com/thumb/1/3/134505-v1/corliss-tunnel.jpg)
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![Cross City Tunnel](https://c1.vgtstatic.com/thumb/1/3/134387-v1/cross-city-tunnel.jpg)
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![Cross Harbour Tunnel](https://c1.vgtstatic.com/thumb/9/2/9253-v1/cross-harbour-tunnel.jpg)
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![Cross-Harbour Tunnel](https://c1.vgtstatic.com/thumb/1/3/134358-v1/cross-harbour-tunnel-1.jpg)
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![Crypta Neapolitana](https://c2.vgtstatic.com/thumbll/9/9/99677-v1/crypta-neapolitana.jpg)
© Bing Maps
![Củ Chi tunnels](https://c1.vgtstatic.com/thumb/1/7/179902-v1/ca-chi-tunnels.jpg)
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![Cudgen Road Tunnel](https://c1.vgtstatic.com/thumb/1/3/134388-v1/cudgen-road-tunnel.jpg)
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![Cumberland Gap Tunnel](https://c1.vgtstatic.com/thumb/1/3/134777-v1/cumberland-gap-tunnel-1.jpg)
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![Cumberland Gap Tunnel](https://c1.vgtstatic.com/thumb/1/3/134314-v1/cumberland-gap-tunnel.jpg)
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![Da Lat Clay Tunnel](https://c1.vgtstatic.com/thumb/2/4/249460-v1/da-lat-clay-tunnel.jpg)
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![Dagslåt Tunnel](https://c1.vgtstatic.com/thumb/1/3/134573-v1/dagsl-t-tunnel.jpg)
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![Dalmovikhals Tunnel](https://c1.vgtstatic.com/thumb/1/3/134487-v1/dalmovikhals-tunnel.jpg)
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![Damavand Tunnels](https://c1.vgtstatic.com/thumb/1/7/173855-v1/damavand-tunnels.jpg)
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![Damsgårdstunnelen](https://c1.vgtstatic.com/thumb/1/0/107839-v1/damsg-rdstunnelen.jpg)
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![Dartford Crossing](https://c1.vgtstatic.com/thumb/1/3/134537-v1/dartford-crossing-1.jpg)
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![Dartford Crossing](https://c1.vgtstatic.com/thumb/1/3/134373-v1/dartford-crossing.jpg)
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![Daumannsvik Tunnel](https://c1.vgtstatic.com/thumb/1/3/134478-v1/daumannsvik-tunnel.jpg)
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![Dennis L. Edwards Tunnel](https://c1.vgtstatic.com/thumb/1/3/134341-v1/dennis-l-edwards-tunnel.jpg)
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![Derech Har HaTsofim Tunnel](https://c1.vgtstatic.com/thumb/1/4/143705-v1/derech-har-hatsofim-tunnel.jpg)
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![Detroit & Windsor Tunnel (Detroit side)](https://c2.vgtstatic.com/thumbll/1/0/10685-v1/detroit-windsor-tunnel-detroit-side.jpg)
© Bing Maps
![Detroit & Windsor Tunnel (Windsor side)](https://c1.vgtstatic.com/thumb/1/0/10686-v1/detroit-windsor-tunnel-windsor-side.jpg)
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![Disley Tunnel](https://c1.vgtstatic.com/thumb/1/3/134771-v1/disley-tunnel.jpg)
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