For the construction of a dam at Jánovas (which fortunately did not take place), large tunnels were made for work traffic in the past. Nature has taken it back!
The dead-end road is only 800 meters long but has now become a beautiful hiking trail for nature lovers.
The Rio Ara is one of the few free-flowing rivers in the Pyrenees.
Geological history is clearly recognizable even to non-geologists.
The short cul-de-sac is a must-see for geologists, biologists, bird watchers, flora enthusiasts, entomologists and of course also for amateur photographers.