De la Tosca

Past the "Goteras", beside km 23 of the Burgui Roncal road (NA137), a ravine opens up on the right-hand side. Leave the car beside the road and follow the bed of the ravine until you pass a queleta and cross the watercourse. Continue along a track that climbs to the right. Go up about 50 m and, leaving a track that branches off to the left, keep climbing through a limestone area where there is a queleta, always along the track, until you come to see the watercourse that flows out of the fuente de la Tosca and crosses the track. The mouth of the spring is hidden in a dense boxwood thicket to the left of the track.