Col des Lessières

The gravel Col des Lessières is one of the highest roads of Europe

Col des Lessières is a high mountain pass at an elevation of 2.936m (9,632ft) above the sea level located in the Tarentaise Valley, in the Savoie department of southeastern France. It's one of the highest roads of Europe.

The road to the summit is gravel. 4x4 vehicles only. Impassable in winters. It's one of the highest roads of the country. The track to the summit includes several narrow and steep sections (up to 25%). It’s brutally tough with roughly sections, on very rocky, slippery path / ski piste at occasionally impossible steepness. 
Pic: Bram van Gelder