Col du Piéfroid is a high mountain pass at an elevation of 2.937m (9,635ft) above the sea level, located in the Isère department in the Rhône-Alpes region of south-eastern France. It’s one of the highest mountain roads of Europe.
The road to the summit is gravel, rocky, tippy and bumpy at times. The road is impassable in winters. Great trail for experienced wheelers. Avoid driving in this area if unpaved mountain roads aren't your strong point. It’s a chairlift access trail. 4x4 required. Stay away if you're scared of heights. Expect a trail pretty steep. Wet conditions may make for tough driving along the muddy road. It’s one of the highest mountain roads of the country.