The start is at the Las Arenas car park.
(S/E) Cross the car park to the exit, then turn left onto the road leading to the “Cueva de queso de Cabrales”.
(1) Just before the second bridge, take the path branching off to the right, signposted ‘Invernales de Vanu’.
(2) On the path, there is a cave used as a sheepfold.
(3) Unobstructed view of the Picos de Europa. Continue to the junction.
(4) Follow the main path uphill, opposite, signposted “Route No. 9”.
(5) View of the Naranjo de Bulnes peak, which the Asturians call Picu Urriellu.
(6) The path continues straight on, passing an old sheepfold and a spring flowing into a trough on the right.
(7) At the junction, turn right and walk past a wooden picnic table. Continue along the path.
(8) Take the path on the right, which forms a small circular loop, to explore the 18th-century sheepfolds at Invernales de Reyos.
(9) Take the path on the left at the bend, which is circular and passes the old farm buildings at Bibuyes (in ruins) and La Magdalena. Then turn left onto the small tarmac road which leads back down to the village of Las Arenas (S/E).