Punta Marmottere, Mountain summit in Graian Alps, France and Italy

Punta Marmottere is a mountain summit in the Graian Alps that rises to 3,384 meters and marks a natural border between the French department of Savoie and the Turin metropolitan area. The two sides of the peak display distinct geological features and vegetation zones that shift with increasing elevation.

The peak has long served as a natural boundary marker between French and Italian territory, with local communities using its paths for cross-border passages over generations. The two nations later formalized this geographic line through international agreements.

The summit holds a small stone cairn and a border marker erected in 1963, where the boundaries of Novalesa, Bessans and Lanslebourg-Mont-Cenis meet. The name Marmottere refers to the marmots of the slopes; the French maps call the mountain Mont Tour, after the nearby Rocca Tour.

The summit is reached either from Punta Novalesa along the stony south-east ridge, or from the south-west side starting at a hairpin bend of the RN6 road just below the Col du Mont-Cenis. The Italian side belongs to the comune of Novalesa, the French side to Bessans and Lanslebourg-Mont-Cenis. A boundary stone erected in 1963 and a small cairn stand on the top.

The summit holds a border marker erected in 1963 beside a small cairn of stones. Since the 1947 Treaty of Paris the Italo-French border leaves the main watershed here and turns southwest toward the Cenischia torrent, meeting the watershed again near Punta Tricuspide above Giaglione.