Col de la Croix de Fer, Mountain pass in Saint-Sorlin-d'Arves, France.
Col de la Croix de Fer is a mountain pass in the French Alps connecting Le Bourg-d'Oisans with Saint-Jean-de-Maurienne at 2,068 meters elevation. The route spans approximately 34 kilometers through alpine terrain, with significant elevation changes along the winding road.
The pass first gained recognition in 1947 when it was officially included in the Tour de France route. Since then it has become an iconic challenge in professional cycling history.
The name refers to the Iron Cross, a metal cross standing at the summit that serves as a landmark for cyclists and hikers crossing this route. The cross has become a symbol of achievement for those who reach the top.
The route can be approached from two directions with roughly equal distance on each side of the pass. Both approaches require stamina due to sustained climbing over long stretches without significant breaks.
The road passes by multiple hydroelectric dams including Barrage du Verney and Barrage de Grand'maison that dot the landscape. These structures create an unexpected blend of industrial engineering and mountain scenery along the route.
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