The major mountain range that forms the natural border between Italy and France is the Alps. This mountain range is renowned for its stunning landscapes, reaching high altitudes and offering some of the most picturesque scenery in Europe. The Alps are not only a natural barrier between the two countries but also a popular destination for skiing, hiking, and mountaineering. They have a significant impact on the climate and biodiversity of the region, hosting unique flora and fauna. The Alps are a vital economic resource as they contribute to tourism and recreation.