River which starts in Lliurona, in the Alta Garrotxa of Empordà and is the main tributary of the Muga.
It has a path of some 40 kilometers, passing through many towns, from Albanyà to its statuary in Vilanova de la Muga.
It is characterized by the sever droughts that it suffers in the summer and the many floods during the rainy season, upon receiving numerous torrents.
In its passage through some towns it creates pits, ravines and fluvial terraces used by the local population for recreation, as in the case of the Park of El Manol in the town of Vilafant, where hiking may be practiced on a signed route. There is a mountain bike track as well.