_ Start_: From Irun, head towards the Aiako Harria Nature Park, wind up to the pass and descend to the car park at the Col d'Elurretxe at 490 m.
(S/E) Head for the information panels and follow the path up to the South-East, marked with four coloured stripes.
(1) Take the path marked with a pink dot to the right: it runs alongside a fence and then climbs to the summit, making a first bend to the left and a second to the right.
Reach Muganix.
(2) Descend from the summit along the same path, then head South-East towards the second summit, Irumugarrieta, adorned with a monument to peace (Lurrean pakea).
Be sure to follow the path marked with pink dots; it would be unwise to venture off the marked paths, as the gradient is quite steep to the West.
(3) Descend to the East to find the path to the third summit. Turn right and follow this path through narrow passages between rock and wall. Reach the summit of Txurrumurru, adorned with a metal bird sculpture.
(4) Return by the same route as the outward journey, only avoiding each summit, which must be bypassed to the East by taking the path along a meadow fence before crossing a small wood to return to the pink route of the outward journey.
Return to the car park at the starting point (S/E).