Parking: <a href="https://goo.gl/maps/h4zZaNKT8HJQ7sYN9">43.263322, -4.621652</a>.
From the parking walk over the road 30m towards the southeast, on your left you'll see a wooden bridge. On July-2023 this bridge was in bad conditions and closed, but it's possible to cross the river walking over, just find a shallow area, like 15m beyond the bridge.
On the other side, the path is visible, follow it til the end where the sector is. Be aware of the very loose rocks.