To get to the start by car:
Cross the border at Dantxaria, continue on the N-121B, which climbs to the Col d'Otxondo, then descends again, passing near Amaiur.
A little further down, reach Erratzu on the left of the road. In this village, turn right at the "Cascada Xorroxin" sign.
Shortly after the school, ignore the car park on the right and turn left into the Gorostapolo district.
Go as far as the small square with a fountain and a pediment to park.
Moderator's comment: see reviews for alternative car parks.
(S/E) Go back down the village street to the little chapel. Turn right, as indicated on the sign. Cross a river on a stone bridge.
(1) At the crossroads, go straight ahead. A little further on, at the three-way junction, keep to the right, then cross a 2nd bridge. Reach the first waterfall.
(2) If the water flow is not too strong, cross the river and turn left to reach the second waterfall, which is the most beautiful.
(3) If the water flow is too strong, do not cross and take a narrow path (slippery in wet weather) on the right, overhanging the river. 50m further on is a small lookout from which you can admire the waterfall. Make a U-turn and retrace your steps to the crossroads.
(1) At the crossroads, turn right (Yellow and White markings). Before an overhanging barn on the left, turn right down the path (marked).
(4) Cross a river on a footbridge, then the well-paved path rises. Ford a stream, the path undulates gently. Ford a stream again, and the path, still marked and paved, rises and joins a road.
(5) Take this road on the right. Ignore the 1st path on the left.
(6) Take the 2nd path up on the left, signposted Sorginetxoa, and the dolmen is immediately there. Immediately after the dolmen, go downhill to join the road, which continues on the left. After a few bends, take the 1st road down to the right.
(7) In a left-hand bend, take the track on the right, marked in Yellow and White.
Descend and cross the river, then climb the other side of the valley (Yellow and White markings). Ford a stream before reaching a barn. Continue on this Yellow and White marked trail.
(8) On a downhill slope, turn right off this signposted path and descend to the village (S/E).