Cross the road and take a wide dirt track. Follow it for a hundred metres, then take a bend to the left, leaving another track that goes to the right. Continue this way until you reach a small plateau with two meadow entrances. Turn left onto the path that is still shared with the GR10. The climb continues through gorse and along a fence on the right. At the end of the meadow, turn left on a path until you reach a road. Turn right and follow it for 2.5km to the top of the Artzamendi.