Múlagöng

Múlagöng (Icelandic pronunciation: [ˈmuːlaˌkœyŋk]) or Ólafsfjarðargöng [ˈouːlafsˌfjarðarˌkœyŋk] is a one lane tunnel in Iceland, located in Northeastern Region along Route 82, connecting Dalvík and Ólafsfjörður. It was the fourth tunnel constructed in Iceland. It has a length of 3,400 m (11, 155 ft) and was opened on March 1, 1991.

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

Other tunnels in Iceland

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