Col Saint Martin, an iconic road in the Alpes-Maritimes
Col Saint Martin is a high mountain pass at an elevation of 1.500m (4,921ft) above the sea level, located in the Alpes-Maritimes department, Provence-Alpes-Côte d'Azur region in Southeastern France. The pass is traversed by the scenic Route des Grandes Alpes.
The road to the summit, also known as La Colmiane, is paved. It’s called M2565. It is sometimes boldly carved into the rock.
The pass is 21.8 km (13.54 miles) long, running west-east from Rimplas towards Saint-Martin-Vésubie. The road has been featured in the Tour de France race. It’s pretty steep, hitting a 9.1% through some of the ramps.