Colle delle Finestre

Colle delle Finestre (2,178 metres (7,146 ft)) is a mountain pass in the Cottian Alps, in the Italian region of Piemonte, Italy, linking the Susa Valley and Val Chisone. The road was built around 1700 to gain access to the fortresses in the area, mainly the Forte di Fenestrelle. The road is very popular for both cyclists and motorbikes with magnificent views of the surrounding mountain ranges. It serves as a tourist attraction. From Susa, the mountain pass is 18.5 kilometres (11.5 mi) long at an average of 9.1% (elevation gain: 1,694 metres (5,558 ft)), the maximum gradient being 14%. The final 8 kilometres (5.0 mi) of road leading to the summit from the Susa end have not been asphalted.

Source: Wikipedia (CC BY-SA 4.0) — https://en.wikipedia.org/wiki/Colle_delle_Finestre