Col de l’Herpie is a high mountain pass at an elevation of 2.970m (9,744ft) above the sea level, located in the Isère department in the Rhône-Alpes region of south-eastern France. It’s one of the highest roads of Europe.
The road to the summit is totally unpaved. Accessibility is largely limited to the summer season. It is not generally snow-free until late June or even July in some years. It’s a chairlift access trail. 4x4 vehicle required. The climb is very steep: an average slope of 12%. Wet conditions may make for tough driving along the muddy road. It’s one of the highest roads of the country.