Mont Blanc or Monte Bianco, both meaning "White Mountain", is the highest mountain in the Alps and the highest peak in Europe outside of the Caucasus range. It rises 4810m above sea level and is ranked 11th in the world in topographic prominence.The mountain lies in a range called the Graian Alps, between the regions of Aosta Valley, Italy, and Haute-Savoie, France. The location of the summit is on the watershed line between the valleys of Ferret and Veny in Italy and the valleys of Montjoie and Arve in France. The Mont Blanc massif is popular for mountaineering, hiking, skiing, and snowboarding.The three towns and their communes which surround Mont Blanc are Courmayeur in Aosta Valley, Italy, and Saint-Gervais-les-Bains and Chamonix in Haute-Savoie, France. The latter town was the site of the first Winter Olympics. A cable car ascends and crosses the mountain range from Courmayeur to Chamonix, through the Col du Géant. Constructed beginning in 1957 and completed in 1965, the 11.6 km (7¼ mi) Mont Blanc Tunnel runs beneath the mountain between these two countries and is one of the major trans-Alpine transport routes.