This route joins the three main rivers that make up the region: Saja, Nansa and Deva. Starting from Valle de Cabuérniga, you will cross the mountain passes of Collada de Carmona, Collado de Ozalba and Collado de Hoz. The great attraction are the viewpoints from which you will observe an incredible landscape. Of course, you have to like driving because the road is winding and with a constant up and down!