Route that starts in Eugi and climbs the track that connects with Zilbeti (coinciding with the route 09.Azegi-Etxarro-Saigots). At the pass it turns right and continues through some fields in search of the Azegi mountain, a place where the routes separate (be careful with the entrance, it is between boxwoods and you have to be attentive). This route turns to the right of the Azegi mountain to begin an intense descent in search of the ravine that will leave us on the bridge that crosses the Arga River to the village of Urtasun. From there, we will go up to the village and return along the NA-138 road heading NORTH to Eugi.