Head to Place de Tardets. Walk up the small street in the middle, near the chemist’s, and continue straight on along the fronton to the sports hall. Park in the car park by the roadside.
(S/E) From the car park, follow the pleasant, partly shaded path that runs alongside the stream. You’ll come to a fork in the path.
(1) Carry on straight ahead and follow the road to a bridge and a dirt track
(2) Leave the tarmac and take the dirt track, continuing straight on alongside the stream. Ford another stream before emerging into more open country. On your left, you’ll see the destination of the walk: the summit of Erretzü. The main stream continues to flow on your right beneath the ash and hazel trees. Ignore all the paths leading uphill to the left and follow the stream until you reach a path that crosses it.
(3) Take this path and, after two hairpin bends, you’ll reach a tarmac road. As you pass Paillet Farm, close the gate behind you and you’ll come to a Fork in the road.
(4) Turn left and head uphill. Pass close to Montecorat Farm to reach Urrutigoïti Farm.
(5) Leave the road and take a path on the right. Continue along this sunken track, beneath the holly bushes, lined with enormous, centuries-old chestnut trees. The path soon emerges into the open at the Col d’Erretzü, from where you can see the summit again.
(6) Continue straight on along a balcony-like path through the fern-covered woods. There is a breathtaking view of the Pic d’Anie massif and the mountains of Béarn. After a short climb, you’ll reach a wide, flat area.
(7) Turn left and, after a flat dome, begin the ascent towards the summit. Climb straight up along the ridge, following the well-marked path through the ferns. Pass the large cairn on the first summit (altitude 696 m) and head along the ridge to the main summit.
(8) Descend to the left (do not head straight towards the Col de Sustary) along a fairly steep and very stony path ; proceed with caution. You will reach a flat area.
(9) Continue along the path opposite and descend to the road you took at the start.
(1) Follow it to the right as far as the car park (start/end).