Park in the car park at the South entrance to Broto on the main road.
(S/E) Head North-West through the village with its many shops. Reach the bridge over the Rio Ara.
(1) Turn left and descend the staircase along the river. Follow the GR®-15 signs for Yosa and Otal. You reach the Oto road, which you follow to the left for a few hundred metres. The GR® leaves the road on the right and follows a beautiful suspended path offering magnificent views of Broto. Enter Oto.
(2) Head West through the village, following signs that are not always very clear. It will take you back down to the outskirts of the town. Always follow the more obvious signs.
Initially, you will pass through agricultural areas with wide views. Then enter wooded areas with many box and walnut trees. The climb is gentle, becoming steeper as you approach the hamlet of Yosa, which you reach.
(3) Continue North-West on the GR®°-15 and follow the Otal-Puerto de Yosa signs. Then fork due West and, after a short, hard climb, reach the Tozal del Pueyo, which you reach by bending eastwards (1602m).
(4) Enjoy this superb balcony with a 360° view. For the return journey, follow the Broto signs on the well-marked track that remains on the Serrato de Yosa ridge. Ignore the paths that go off in the direction of Liñas or Fragen. Reach the antennae overlooking the valley to enjoy the view.
(5) From the antennae, retrace your steps for about 150m, then turn left in a hairpin bend and descend steeply to reach the village of Oto.
(2) Turn left and follow the same route back to the car park (S/E).
n order to reach the banks of the torrent, we drove through OTO towards its municipal campsite, which we bypassed, then crossed a ford that was accessible by car, several km of deserted and peaceful banks (apart from the cows :-).