In Saint-Étienne-de-Baïgorry, after the church, head towards the Col d'Ispéguy. Park at the pass, in the car park next to the venta.
(S/E) The car park overlooks the Ispéguy ravine, and the hike begins at its southern end. A well-marked trail in red and white (GR® cross-border) starts on the hillside towards the south-east. Initially open, this path winds its way through a magnificent beech forest for just under two kilometres on a gentle slope until it leaves the woods. The trail is well marked throughout. This brings you to the Nekaizeko Lepoa Pass (view of the Autza opposite).
(1) Pass to the left of an enclosure. At its end, leave theGR® as it is better to take a clearly visible contour line in the grass (south-west) on your left. This avoids going down into the ravine and climbing back up the other side. This contour line joins the Col d'Elhorrieta and theGR® left above.
(2) At the pass, leave the road on your left and climb the ridge, following the west-southwest and then southwest markings again, along the edge of the forest. The climb is very steep and at times runs close to the cliff, offering magnificent views. Leave the woods, then re-enter them a little further on. Exit the woods for good onto a grassy area to the right of the Haarrigorri peak after a fairly steep climb through the forest. You can visit the peak by climbing the grassy slope on the left.
(3) Head south-west towards large rocks.
(4) Take a south-westerly path, still marked in red and white, which joins the grassy ridge of Autza.
(5) Leave the cross-borderGR® trail, which descends to the left, and follow the ridge to the right (north-west). Initially grassy, it becomes stony. The climb is quite difficult in these rock piles. Many paths wind their way through, marked by numerous cairns, to the summit of Autza (splendid 360° view). Several secondary summits
(6) Descend the ridge in the opposite direction, taking care in foggy weather, as it is easy to stray from the south-east route (a compass or GPS track is really useful in this case).
(5) Follow the same route back to the Nekaizeko Lepoa pass.
(1) Then take a path on the left towards the Col d'Olate. Head north then north-northeast (orange marker posts).
(7) At the pass, take the path down to the left (north-west), then turn sharply right towards the north (orange markings). Descend the wooded border ridge via a well-marked path heading north and pass several pidgeon hunting huts. Leave the woods and, after about fifteen minutes, you will come to a fork at around 840 m. The path on the left, still marked in orange, leads to the Col d'Ispeguy in a different way.
(8) For the beauty of the landscape, take the path on the right, marked with a cross. Follow the ridge from Olhateko Kaskoa, with a series of small ascents and descents, to a small summit that you should not climb.
(9) Take the path on the right that descends into the woods (east-northeast). This path enters the forest and becomes quite steep and gravelly (be careful not to slip). When you reach the flat area and a sort of shelter, probably used by hunters, turn completely right at a right angle. A little further on, this path turns completely to the left and reaches a narrow passage still covered with dead leaves, where the trail becomes a little difficult to follow. You can see the ventas (shepherds' huts) of the pass below. Reach them without really following a path between the trees to get to the Col d'Ispéguy car park (S/E).