The location of the old village of Cognin shows the old links that inhabitants had with the entrance to these gorges. At the time, the only way to go up to Malleval was by the track along the torrent. The road was built above all to secure the access. No major works here, instead the two villages decided to join forces in 1880 to trace this secondary, but unique road, with its succession of tunnels cut directly into the rock. From Cognin-les-Gorges, it is particularly after the first tunnel that the road becomes exceptional. There are no stopping points so it is better to continue directly to Malleval-en-Vercors where you will appreciate the break. In summer, you can continue by the Coulmes Forest towards Rencurel (return by the route des Ecouges) or Presles (return via St Pierre de Chérennes).