Source of the River Tornola

Cross the border at Behobie and head for Oiartzun via the GI-2134. On entering Oiartzun, turn left towards Lesaka on the GI-3420. The start is 500 m before the tunnel that descends to Lake Endara, near the Arritxulo Aterpetxea Inn.

(S/E) The path starts at the far end of the car park, heading south. It follows a circular route westwards, then turns east-southeast to reach a three-way junction.

(1) Take a sharp right-hand bend onto the path, which later turns northwards and reaches a T-junction.

(2) Turn left for 100 metres, then turn right onto the path which descends towards the river and crosses it via some pretty wooden bridges.

(3) After climbing about sixty metres, take the path on the right which follows the edge of a canal along the contour line, then climbs until it reaches the edge of a tarmac road.

(4) Do not follow the road but take the path immediately on the right, which winds its way down towards some buildings.

(5) Before the bend, turn right and walk alongside a factory, following the river. After 100 metres, a small path branches off to the left. This path then winds twice and rejoins a small concrete road.

(6) Continue to the right towards the north-east to rejoin the GI-2134 after a left-hand bend.

(7) Cross the GI-2134 to take the path opposite, then, 600 metres further on, cross this road again.

(8) To the left of the main track, take a very narrow path which climbs quite steeply, then runs alongside the road until you return to the car park (S/E).

No water sources along the route.