Anguiano (00 min) Start at the end of the road’s parking area, cross the road and go to the left up a street until you turn right down the first path. After crossing a gate, turn to take another path on the left and continue on a livestock route next to a fence. After a while, the steep route leads into a beech grove that covers the shaded part of the ravine and it becomes wider and smoother, allowing you to access a hill where you find another trail. Hill (52 min) Great view of Anguiano and Peña Reló. Take the trail that goes up and into a beech grove and, when the grove ends, the trail crosses the limestone cliffs of Congosto. After passing some pens, you arrive at a fountain on the right. Congosto Fountain (1 h 10 min) Follow the trail until you arrive at an abandoned pen and continue straight until you reach the trail again. Ascend a quite steep slope at the end of the river bed. Cross a by-path and then another one and, after a steep zigzag, you arrive at a hill. From this hill, by going north, you can access a promontory from which you can see a panoramic view of the Najerilla Basin and the Ebro Valley. Continue climbing along the rocks and beeches that lead to the Gimeno Valley until you reach another hillock. Hill (1 h 30 min) Cross the hill among rocks and slightly descend the hillside between a young beech grove and a high moor. After a small crossing, enter a beech grove and continue descending smoothly until you reach a stream. Regatillo Stream (1 h 52 min) Wade across the stream and enter a by-path that steeply zigzags to ascend until it reaches a plain where it goes into a trail on the right. Continue straight through a beech grove until you reach a gate. Collado de la Mohosa (2 h 05 min) It divides the waters between the Najerilla and the Iregua Rivers at 1,298 m. After crossing the fence, continue in the direction of the path until you reach a by-path among beeches that begins the descent towards Nieva. After about 10 minutes it becomes a path and has a steeper slope before arriving at a stream. Before this, cross a by-path. Continue until you reach the stream. Stream (2 h 33 min) Wade across the stream and take a hillside path where the beeches become oaks. Slowly the path descends, sometimes between steep banks. After crossing a milestone, the path descends more steeply. After an area of wild cherries, you reach a clearing where the path goes slightly to the right between hazelnut trees to lead into a pasture area. Down a hillside you arrive at an incline over a stream, where you turn right to descend in parallel until you reach a forest trail after a brief zigzag. Trail (2 h 47 min) When you reach the trail, turn left. You arrive at another trail to continue descending in parallel to the Trampal Stream. Ignore the trail on the left and you will arrive at a crossing where the stream joins the Castejón Stream. Castejón Stream (3 h 10 min) You can see the Nieva Castle at the end. Continue in the direction you were walking in, ignoring the trail on the right. After ignoring a path on the left, cross a cattle grid and, after crossing a quarry, you arrive at a road crossing. Path to Nieva (3 h 25 min) Cross a bridge and take the trail on the right that ascends to Nieva. It is impossible to miss. You arrive to the first houses where, after turning right, you reach the Plácido Villanueva square, next to a church. Nieva de Cameros (3 h 45 min) Exit the square by the main street towards the road that leads into Nieva. At the beginning of the road, turn right and take the trail that passes next to the Chapel of La Soledad, which you surround to descend towards the road. Road (4 h) Turn right and, after 500 m, exit on the right and enter a trail.