Satellite map of Mount Bolu Tunnel
Mount Bolu Tunnel (Turkish: Bolu Dağı Tüneli) is a 3.1 km (1.9 mi) long highway tunnel constructed through the Bolu Mountain in Turkey between Kaynaşlı, Düzce and Yumrukaya, Bolu.
Latitude: 40° 45' 0.00" N
Longitude: 31° 26' 60.00" E