Built between 1843 and 1854, Les Grands-goulets Road is a superb route that links the Royans area to the Vercors Central (France). The construction of this road was a huge human and financial investment.
The surface of the road is asphalted. This small valley narrows 20 km further above the Vernaison River that turns into a 200 m high waterfall. The road becomes magnificient with the rock just over your head.
After la Plaine du Royans and the Petits Goulets, there is a succession of impressive tunnels that give access to the green hilly area of Echevis, stuck between the white cliffs of the Arps and the Allier.
The space between mountains is really tiny and on the opposite side of the road, the mountain is called "Rochers d'Echevis"...
To arrive to this road, at Pont en Royans, take direction La Chapelle en Vercors via Sainte Eulalie en Royans. It finishes in a village called "Les Barraques en Vercors"... Unluckily, the road was closed to all kind of vehicles recently, after 156 years in use. Some accidents forced the French government to close the road.