One of the most geologically valuable enclaves of the Pyrenean mountain range, Collegats Congost. Between the regions of Pallars Jussà and Pallars Sobirà, the congost is a gorge that acts as a natural border, separated by La Noguera Pallaresa river. The route runs through Els Rocs de Queralt, Sant Pere Canyon, passing through the ruins of the old Monastery of Sant Pere de les Maleses, and with a visit to the Cova de la Serp (snake’s cave).