Cottian Alps

Cottian Alps, division of the western Alps on the Franco-Italian border, named after the Gallic chief Cottius. Located primarily in southeast France, but partly within northwest Italy, the Cottian Alps extend south from Mont Cenis Pass, at the southern end of the Graian Alps, to Argentière Pass, at the northern end of the Maritime Alps. The highest peaks are Monte Viso in Italy, 3,841 m (12,602 ft) and Aiguille de Chambeyron in France, 3,399 m (11,152 ft). Prior to World War II (1939-1945) the French side of the Cottian Alps was heavily fortified. The Mont Cenis Plateau and the Mont Tabor-Chaberton area of the Cottian Alps were ceded to France following World War II.