Start from the small car park behind the church in Ossès.
(S/E) Go round to the front of the church and, with your back to it, follow the Route d’Irissary (D8) to the left, heading west (yellow PR® markings leading to Haltzamendi). After about 200 m, turn right towards École Saint-Michel. Pass the school and then the football pitch (on the left).
(1) At the three-way junction, take Chemin Gastenania on the left and follow it to the next junction (yellow markings).
(2) Follow the road to the right, which climbs north-westwards and soon turns into a small grassy track. Reach the ridge at an altitude of 550 metres (yellow markings).
(3) Ignore the PR® path (yellow markings) heading off to the left along the slope and stay on the ridge. To do this, go behind the Yellow Cross and follow a small, more or less visible track to Haltzamendi at an altitude of 813 metres.
(4) Continue along the ridge to a pass reached by a path coming from the left which skirts the summit of Haltzamendi.
(5) From this pass, continue straight on to the foot of Laïna, winding your way between the rocks. It is possible to bypass this section on the right via a path.
(6) Look out for the descending paths to the right of Laïna, which you will take on the return journey. But for now, stay on the ridge to reach Laïna and then descend to a pass. It is possible to bypass Laïna via a path on the left that is more or less level.
(7) Continue straight ahead to reach the antennas on Mont Baïgura.
(8) Continue to Erregelu at an altitude of 846 metres.
(9) At Erregelu, turn back, pass Mont Baïgura and head for the pass between Baïgura and Laïna.
(7) At this pass, ignore a path to the right and take a trail straight ahead along the slope, which bypasses the summit of Laïna and joins the ridge line just beyond the summit.
(6) Turn left onto the correct path you spotted on the way up, which runs along the slope south of the summit of Laïna, and reach the ridge of the shoulder descending south-east of Laïna. Go round a few rocks but generally stay on the summit area.
(10) Leave the ridge branching off to the left, towards the east, to descend the one on the right, to the south, and reach, fairly quickly, a junction of paths.
(11) Leave the path on the left and follow the pretty little ridge to the south. Pass Elixatekoborda at an altitude of 335 metres and reach a track which you quickly leave at the exit of a hairpin bend to the left.
(12) Leave the track at the 226-metre altitude to follow a path on the right descending due south then south-west. Cross a bridge at the 164-metre altitude over the Elueterreka stream and, at a junction, continue due south on the track to the right which joins a small road.
(13) Continue straight on along the small road heading due south, which turns left towards the south-east. Turn right onto the next small road (at Gaztenarenea), heading due west, and rejoin the route you have already taken.
(1) Take the road on the left that runs alongside the football pitch, then turn left onto the D8 and head for the small car park behind the church (S/E).