Pian del Re, Protected mountain area and river source in Crissolo, Italy
Pian del Re is a high plateau at 2,020 meters (about 6,600 feet) in the Cottian Alps, where Italy's longest river has its source. The terrain lies in a wide basin between steep mountain slopes and contains a peatbog fed by melting glaciers.
The upland was first named in the 16th century when French forces under Francis I moved through the region. The area remained a remote grazing ground for shepherds from the lower villages for centuries afterward.
The name was chosen when French troops under Francis I crossed the area before attacking the Duchy of Savoy. Today walkers see the marker where Italy's longest river emerges from the ground, along with alpine meadows all around.
The mountain road is passable from June to October, but snow can occur even in summer, so visitors should bring warm clothing. The site lies far from the nearest settlement, and there are no supply facilities on the plateau itself.
The peatbog shelters rare plants like Juncus triglumis, a rush that grows only in a few high alpine locations. The damp environment also provides habitat for the Lanza's alpine salamander, a species that is endemic to this region.
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