Chamonix-Mont-Blanc, more commonly known simply as Chamonix, is a commune in the Haute-Savoie department in the Auvergne-Rhône-Al…Chamonix-Mont-Blanc, more commonly known simply as Chamonix, is a commune in the Haute-Savoie department in the Auvergne-Rhône-Alpes region in Southeastern France. It was the site of the first Winter Olympics, held in 1924.