Yeni Zigana Tüneli (Zigana Taban Tüneli - Zigana Base Tunnel)
Karadeniz Bölgesini Doğu Anadolu Bölgesi'ne bağlayacak tünellerden Yeni...ea) and Doğu Anadolu (East Anatolian) regions and existing Zigana Tunnel. Image by Turkish T...
cover tunnel photo by: Matt Brown from London, England / CC BY
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