Balme à Colon (also called Balme à Collomb) is a cave arch located on Hauts de Chartreuse Natural Reserve (Regional Natural Park of Chartreuse) in Savoie department of France. The cave is situated on the west face of Mont Granier mountain above the hamlet of La Plagne. The lower entrance has a measured span of 9.5 meters and the upper entrance a span of 6.5 meters. Balme à Colon is located by red star on IGN topographic map Top 25 number 3333 west La Chartreuse Nord (pleat C8).