Take the road to the Ispéguy pass on the right after the church of Saint-Etienne de Baïgorry.
Coming from the Basque coast, cross the border at Dantcharia, continue on the N-121B to the Col d'Otxondo and descend. Pass Amaiur Maya and continue to the junction with the NA-2600 towards Erratzu. Turn right and cross the N-121B again to continue on the NA-2600 which climbs up to the Col d'Ispéguy.
(S/E) Cross the road and take the path opposite, heading north, then follow the GRT5 trail below the ridges, marked in red and white, which passes near Kuarteleko Kaskoa (823 m), Ttutturruko Kaskoa (839 m) and then Aintziaga (905 m), skirting around a wooded area on the right. Join theGR® 10 and follow it straight ahead for about a hundred metres.
(1) Turn left at the three-way junction to begin a circular climb towards Buztanzelai.
(2) Near a large tree, turn right to reach the summit.
(3) Head north along the ridge on theGR®10to Astate, which is the next summit.
(4) Continue onthe GR®10for about 30 metres, then turn left towards the south-west to rejoin the path you took on the way up near the large tree.
(2) Continue straight ahead and follow the same route back to the Col d'Ispéguy car park (S/E).
).