Park your car at the Col d'Organbide at Border Marker 212.
(S/E) Climb the ridge on the grassy slope, heading south-east, then descend south to reach the track. Cross the track, continuing south, then follow the well-marked path to reach theGR®12crossroads.
(1) Turn right and follow the red and white markings. Cross the Ursarioko forest. At the edge of the forest, you will reach a small pass where you will find a fork marked by a trail marker.
(2) Continue westwards to a trail junction, then continue straight ahead towards Azpegiko, taking the ridge trail. Descend to the pass below and cross the road to the west to reach the Azpegiko Pass.
(3) Then climb north-west on the wide path in the middle of the pasture to reach the summit of Urkulu.
(4) Descend northwards across the grassy plateau to the Urkulu huts. Follow the track to the RD428, then turn right onto this road from the Col d'Anostegui. You will then reach the junction with the Anbuladoi track.
(5) Turn right to reach the border again, where there is a chasm.
(6) Cross the border to re-enter Spain. Leave the track on the left on the grassy plateau until you reach a wide grassy path running parallel to the border. This will take you to the Col d'Organbide car park (S/E).
GPS essential.