The Serra del Cadí is a mountain range running north of Catalonia, part of the Pre-Pyrenees. Its highest peak is the Vulturó, with an altitude of 2,648 metres.
It stretches from east to west between Alt Urgell and Berguedà. The Llobregat River has its sources in Castellar de n'Hug at an altitude of 1,259 meters on the Serra del Cadí.Geologically the northern slopes are made up of Jurassic materials while the peaks are Eocene limestone. The southern face is an almost continuous series of sheer cliffs. The present structure formed during the Tertiary as a consequence of the orogenesis of the Pyrenees and is characterized by its Alpine folding.
This jagged mountain range was formerly a natural barrier hampering communication between Barcelona and Cerdanya, but the situation was resolved after the Cadí Tunnel was built together with the C-16 highway which follows the valley of the Llobregat
Believed to be extinct in Catalonia, the first wolf in 80 years was found recently in the Serra del Cadí