The impressive range is a long mountain barrier stretching from east to west, forming the divide between the waters of the River Segre (Cerdanya and Alt Urgell Counties) and the River Llobregat (Berguedà County).

The mountain range, especially the north faces, has steep, almost vertical escarpments and deep, narrow valleys. There are several peaks over 2000m, with Comabona (2548m) the highest peak in this area.