s forest at the Carro pass The Col du Carro (altitude: 3,149 m) allows the passage between Italy and France. Coming from Italy, the long-distance
hiking trail (marked GR for "Grande Randonnée") crosses
scree then becomes quite steep as you approach the Col du Carro. At the end of the final ascent of the
via ferrata (Italian side), the hiker suddenly comes to a "forest of
cairns" erected over the years and in perpetual growth.