This is the most popular route to Oturia because the hermitages and caves are interesting.
Slope to gain: 1000m
Time to summit: 3h 30min.
-Yebra de Basa is easy to find in the road from Sabiñanigo to Huesca (N-330) following the signals to HU-321.
We begin in the exit of the village at North in a forest track with a small hermitage. The signal of right side prohibits the transit of cars. We walk on the track of the left following the wood signals and the yellow-white paint of P.R.5 to cross the river. We follow the path with a new signal to reach the small hermitage of Coronillas, with a small cross. The path goes to left turning to right to visit another hermitage, the hermitage of Rodillas with a big rock just in the middle. We cross the river and we follow the small terraces turning into the forest in the clear path. After a new turn of the path we reach the bottom of the beautiful waterfall called Cascada del Chorro, near of the big hermitage of Cueva de la Orosia. We cross just under the waterfall following the repises with attention to the wet rock to reach the last section of the path to the end in the hermitage (ermita de la Cruz). From here we descent a little to the big Sanctuary of Santa Orosia. The summit is at the end of the plain but you need to walk still 1h to the summit. It's a good place to take a little rest. Little by little we search the best path to reach the bottom of ramp South. The ramp has a hard slope but it's the last obstacle to reach the summit.