This spectacular canyon of Serrai of Sottoguda, today "Natural Park", extends for about two kilometers between Sottoguda, the last village of the valley, and Malga Ciapela at the foot of Marmolada, the Queen of the Dolomites.
The route is sorrounded by rock walls over 100 m high and in some points it narrows and these walls almost touch each other. You can walk through the canyon on an elevated route above the Pettorina stream, which begins with a bridge in La Vérda area.