This unknown and unique valley of great geological interest and intense mining past offers numerous itineraries. During the journey by vehicle, the Unhola river already welcomes us with the intense red color of its channel. At the end of this route, at the Montoliu crossroads, two great possibilities open up: Montoliu lake and mines, Urets pass and ascent to Mauberme (2,880 m); or lakes of Liat and Pica Palomera, mines of Liat and Plan de Tor. Other variants allow you to connect with the Montgarri sanctuary, the Toran and Varrados valleys, and the French valleys of Birós.