Boztepe Tunnel
Boztepe Tunnel (), is a highway tunnel constructed in Ordu Province, northern Turkey. Boztepe Tunnel is part of the Samsun-Ordu Highway within the Black Sea Coastal Highway, of which construction was carried out by the Turkish Nurol-Yüksel-Özka–YDA joint venture. The -long twin-tube tunnel carrying two lanes of traffic in each direction is flanked by -long Asarkayası Tunnel in the west and -long Öceli Tunnel in the east on the same highway. The tunnel was opened to traffic on 3 March 2019 by Turkish President Recep Tayyip Erdoğan.