Suruç Water Tunnel

Suruç Water Tunnel (Turkish: Suruç Tüneli is a water supply tunnel located in Suruç district of Şanlıurfa Province, southeastern Turkey. The purpose of the tunnel is to provide irrigation for the Suruç Valley from Atatürk Dam. With its length of 17.185 km (10.678 mi), it is the country's longest tunnel.

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Tunnel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).

Other tunnels in Turkey

Delaware Aqueduct United States · 137 km Päijänne Water Tunnel Finland · 120 km Orange–Fish River Tunnel South Africa · 82.8 km Ishikawa Tunnel Japan · 78.5 km Brenner Base Tunnel Austria · 64 km Mont d'Ambin base tunnel France · 57.5 km Gotthard Base Tunnel Switzerland · 57.09 km Hong Kong–Zhuhai–Macau Bridge China · 55 km