The ‘Øvre Årdal to Valdres’ road in Norway began construction in 1910 and opened in 1934: it became a tourist destination through the Norwegian backcountry. Featuring 42 switchbacks to climb over Heirsnosi to its highest point (1,117m. above sea level), it has been closed to vehicular traffic for decades. Matthew from ‘CycleNorway’ YouTube channel tackled this road back in July: watch the video or read more on Bikepacking.com