_ Start_: Cross the border at Behobie and go to Oiartzun via GI-2134. On entering Oiartzun, turn left towards Lesaka, then right towards Altzibar. After Altzibar, continue on GI-3631 towards Artikutza.
Reach the Col d'Uzpuru and continue along this road, with the car park on the right.
(S/E) Head East on the GR®121, which climbs along the ridge to the summit of Munagirre.
(1) Continue East along the ridge until you reach the road.
(2) Take the road to the left.
(3) In the bend, go behind the guardrail and fork right to reach a car park. Turn right towards Oianleku I (in Basque, I for Ipar, North, versus H for Hego, South). The path runs alongside pigeon-houses.
Turn left at the crow's feet, towards the clearing at the bottom of the Basate knoll (630 m).
(5) Leave the path on your left, and continue straight on to the cromlech.
(6) After visiting the cromlech, take the same path in the opposite direction.
(5) Turn right onto PR® GI-1006 (PR® for Pequeños Recorrido, short walks, GI for Gipuzcoa, the province). Exit onto a track, keep right and, at the next crow's-foot, turn left onto PR®-GI-1006.
Cross another cross-country track and continue straight ahead until you reach the road; cross over to return to the start car park (S/E).
