The Bolu Mountain is the largest of the tunnels and viaducts used by the Astaldi Company undertaking the construction of the TEM motorway during the construction of the asphalt.
- Category
- Duzce Air Panorama Black Sea Region High and Air Panorama Turkey All Panoramas
- Tags
- astaldi, düzce, kaynasli, otoyol, bolu dağı, viyadük
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