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The eye of Aitzulo by the Water Way PR-GI 3003

The Aizkorri-Aratz Natural Park hides magical corners of great beauty, one of these most remarkable places is undoubtedly the eye of Aitzulo. The municipality of Araotz, not far from the monumental town of Oñati, has many hiking trails such as the The Water Way or PR-GI 3003 that leads us to visit this impressive cave.

The eye of Aitzulo

The official route has 8,4 km, inviting us to make several detours that increase the beauty of the route and hardly increase the final mileage. The monumental set that forms the old bowling alley and the parish of San Miguel de Araotz is a magnificent departure point for this route that in a first moment will take us to cross the different villages that populate the zone. We will ascend to the Zeliaundi pass, where a short detour will take us to the Santa Cruz de Ugastegi hermitage, a good place to enjoy a well-deserved rest while contemplating the surrounding landscape. From there we will resume our journey, in our case deviating for a while from the PR-GI 3003 to climb to the summit of the Orkatzategi.​

Araotz Valley and Water Route

The views from this Basque mountain are unbeatable, on one side the Anboto and the Urkulu reservoir and on the other the Zaraia mountain range, the Arantzazu sanctuary and the highest peaks in Gipuzkoa. We leave this summit to descend in search of the Water Way while we continue to pass by the various tumuli that populate this area. Together we arrive at the true protagonist of this route, the eye of Aitzulo, a grandiose cave open to the cliff where it sits and invites us to enjoy it calmly. From here we only have to follow the path that will take us back to the farmhouses that will accompany us to our starting point.

Summit of the Orkatzategi

The Trick

There are several routes and trails of different levels that allow us to reach the eye of Aitzulo, although one of the most followed is the one described here.Some of these start from the parking lot of the Arrikrutz caves from where we can also begin this route, in the opposite direction to the one described, but extending the total distance of the route by 3,4 km.

How to get to Aitzulo eye

To get to Araotz we have to go to Oñati through the GI-2630 road that connects it with Legazpi and the AP-1. From Oñati we must follow the road that ascends to the Sanctuary of Arantzazu, in it we will find the detour that leads to Araotz. Along this road we will have several areas where we can park our vehicle. You must be careful because many of them belong to the hamlets and you cannot park in them.

Pet area, hiking with my dog

Simple tour for our friend, as long as he is used to the routes in the mountains. We can not forget that we are in a natural park so we must observe the rules that govern it.

Although there are some places where you can drink it is better to bring enough water and some food.

We are in a livestock area par excellence and although usually the cattle are in closed plots, it is not uncommon to find them on the road.

Description of the route to eye of Aitzulo

From Araotz to eye of Aitzulo 6,5 Km

The Parish of San Miguel de Araotz (0h 00min), marks our starting point for this trekking route through the Natural Park of Aizkorri-Aratz.

We started the route in Araotz

The route continues up the road that brought us here.

We followed the road

We are gaining height as we leave behind the different hamlets that come our way, as well as some the paths.

We leave the highway

Almost without realizing it, we arrive at the detour we must follow, saying goodbye to the highway that accompanied us until here.

The slope seems to be decreasing

The slope gives us a little break allowing us to enjoy the views that this beautiful walk offers. We follow the white and yellow marks of the PR-GI 3003 at all times, while crossing several doors for the cattle.

We go out to another highway

After a while our path reaches its end when it meets the asphalt track that ascends from the road that took us to Araotz.

The slope in this part of the route is considerable

This paved road will take us to the Zeliaundi pass, overcoming the unevenness that still separates us from it. Converted its asphalt into a rough cement, our road continues to make us keep the effort to move forward.

We follow the cement path at all times

After a while, in front of us, we can already see the silhouette of the Santa Cruz de Ugastegi hermitage, which awaits us at the top of the hill we are climbing.

We leave the PR-GI 3003 path

Once in the Zeliaundi pass (1h 15min) the Water Way that we are following turns right to follow a narrow path. In our case we cannot resist visiting the Santa Cruz de Ugastegi hermitage located just 225 m from the crossroads where we are.

We return to the Zeliaundi hill

Enjoying the magnificent landscape that can be seen from the chapel, we return to the crossroads of the hill. There, instead of following the paved path of the PR-GI 3003, we continue along the wide path that runs parallel to it.

The road runs parallel to the PR path

Our intention is to climb to the summit of Orkatzategi, which we can already see in front of us, saying goodbye for a while to the Water Way, the route of which runs halfway up the hillside to the opposite slope where we meet, where we will join it again.

We follow the path on the left

This detour again demands a new effort to gain height with every step, leaving behind some crossroads.

Now we leave the main path

As soon as we reach a new hill, just before starting the descent we see in front of us, we leave the path that brought us here to go to the summit we want to conquer.

The way forward is barely visible

This stretch has no marks or signs to help us along the route and the path we must follow is barely noticeable under the grass that covers it.

Be careful not to skip the detour

Although, if the fog does not impede it, the Orkatzategi serves us as a reference in the few crossings that we will find.

We climb the final stretch of the Orkatzategi

The final stretch of the ascent leaves us almost at the mercy of our sense of direction to find the summit of this mountain.

We arrived at the Orkatzategi

The typical mailbox that crowns the summit of the Orkatzategi (2h 00min) receives us in this impressive viewpoint that we have ascended.

We set course for the eye of Aitzulo

Once we have made a well-deserved stop, we begin the descent that will take us to the eye of Aitzulo.

The path to follow is somewhat more defined

In this case the path to follow is a little more marked than the ascent, making us travel the other side of the triangle that draws the route we are following and whose base is the path that follows the PR-GI 3003.

We lose height quickly

As before, we must be careful not to lose the path we must follow. This part of the route is a little more abrupt than the route we have taken so far.

We are slowly approaching the PR- GI 3003 path

After a while we can already see the water raft of the Aitzgain Canal, where we will meet the Water Way.

We leave the raft on the right

We continue in search of our old companion of route leaving to a side the raft of water and passing next to another of the innumerable tumuli that we can find in these lands.

The grass almost completely covers the path.

The green fields we cross hardly let us intuit the path we should follow. A little further on, the white and yellow marks of the PR-GI help us again in the task of staying on the right track.

We continue to lose height

We continue to lose height without anything making us feel the presence of the wonderful corner we are heading for.

We deviate to the eye of Aitzulo

After a long stretch of descent, the marks on the path warn us of the detour we should take. This path goes into the vegetation radically changing the landscape around us.

We arrived at the eye of Aitzulo

A path that leaves us at the doors of the eye of Aitzulo (2h 35min), which we enter through a stone arch.

From eye of Aitzulo to Araotz 4,1 Km

Without a doubt we are before an authentic cathedral of nature, whose main altar opens to the void while we observe it absorbed.

We leave the eye of Aitzulo

Enjoying this spectacular corner of Euskadi, we return to the top of the cave to, on our left, take the path that will take us to Araotz.

We follow the white and yellow marks

Little by little and following the white and yellow marks, we are leaving this abrupt area of the mountain.

We follow a wide path

Again we see ourselves losing height with every step as we follow a wide path. The descent is as remarkable or more so than the ascent we made at the beginning of the route to reach the Zeliaundi hill.

We do not leave the main path

We continue to lose height and leave behind us as many junctions as we can find.

We arrived at the farmhouses

After passing through a cattle gate we arrive at a curious spot that precedes the farmhouses we are about to visit.

We continue to descend

Once again the asphalt is the protagonist of the itinerary, as we go through the different hamlets that populate the area.

We follow the white and yellow marks

The white and yellow marks of the Water Way continue to make our task easier at the junctions we pass through.

We arrived at the main road

After a while the vertiginous descent comes to an end when we come across the main road, which we will continue on. Ahead of us we have a long stretch of asphalt, in continuous ascent, which brings us little by little to the end of this trekking route.

We leave the main road

A road that we must leave when we reach the intersection with the paved road that goes up to the Zeliaundi pass, to continue along a concrete path that goes up to Araotz.

The slope is considerable

A path that forces us to a considerable effort to overcome the unevenness that separates us from the detour we must take. A detour that does not at all loosen the slope that we are overcoming, but that leaves us at the doors of the parish of San Miguel de Araotz (3h 15min).​

We arrived at the church of Araotz

Place, in this case, from where we start the route and where we will put an end to this beautiful journey through the Natural Park of Aizkorri-Aratz.

Technical data sheet of the route

ico-distancia-totalDistance. 8.7Km

If we do not follow the detour that goes up to the summit of the Orkatzategi we would leave the total distance reduced to 8.4 km. while if we dare to visit the chapel of Santa Cruz de Ugastegi we will have to add the 450 m that this detour involves.

ico-tiempo-totalTime. 3:15h

If we follow the official route in its entirety, the figure will drop to 2h 50min. How we face the strong slopes that we have to overcome will mark the final time we will use.

ico-calendarioTime of year

The landscape that surrounds us in most of the route is spectacular, so being able to enjoy it increases the value of this route. The autumn and spring always offer us their striking colors expanding the beauty of the route.

ico-materialRequired equipment

The route itself is a simple trekking route where water and some food cannot be missing. Some warm clothes or clothes that protect us from the wind are not superfluous even though it is summer. If you are going to climb the Orkatzategi you can't be missing the GPS with the track as it is easy to get lost. Hiking poles will be a great help on the steep slopes to overcome. Consult our list of material and equipment for hiking. Read more

ico-dificultadDifficulty. Medium


The steep slopes are what mark the difficulty of this route, forcing us to be in good physical shape. With due calm these ramps should not put us in great difficulty.

Severity of the environment

Except for the eye of Aitzulo and the summit of the Orkatzategi, we should not have any major problems. In these two places we should be extremely careful because of the steepness of some areas and the vertical cut we have in both places. The mud can put a degree of difficulty both in the cave and in some areas of the route. Attention in the paved areas, there is usually more traffic than we think.


Marked by white and yellow marks at all times, except on the detour to the Orkatzategi where there are no marks to guide us. The fog can make it quite difficult to get your bearings, especially on the unmarked stretch.

Important places to pass through
1-Araotz 0:00h 462m 0Km 30T 544360 4760030
2-Pass of Zeliaundi 1:15h 735m 2,5Km 30T 543218 4760772
3-Orkatzategi 2:00h 869m 4,6Km 30T 544321 4762227
4-eye of Aitzulo 2:35h 618m 6,5Km 30T 545512 4761217
5-Araotz 3:15h 462m 8,7Km 30T 544360 4760030

Coordinates UTM Datum WGS84

Profile of the route

Profile of the route to Ojo de Aitzulo

ico-desnivel-acumuladoSlope: 1050m

ico-desnivel-positivoSlope +: 525m

ico-desnivel-negativoSlope -: 525m

ico-altitud-maximaMaximum altitude: 869m

ico-altitud-minima​Minimum altitude: 395m

Cartography, maps and tracks

Map of the route to Ojo de Aitzulo

This sketch of the route is not made to scale nor does it contain all the information relating to the area, it is merely indicative.

Topographic map of the route to the Ojo de Aitzulo


This schematic with the path is approximate and has been created from the derived cartographic base © Instituto Geográfico Nacional "Cuadrante 88-3 y 113-1, 25.000"

Senditur has manipulated the tracks to correct the aberrant points that may exist, caused by problems with the reception of the GPS signal. In any case the tracks are always approximate. SENDITUR encourages you to use the new technologies within your reach, using them as support and consultation in your activity, not basing the realization and orientation of the same only and exclusively on them, since they may see their functioning altered by very diverse causes, not functioning correctly and their indications may not be precise.

Aizkorri-Aratz Natural Park
Ojo de Aitzulo
San Miguel de Araotz Parish
Santa Cruz de Ugastegi Hermitage
Summit of the Orkatzategi
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Listado de experiencias
Juan Fernandez
Created the 11-10-2020

Un sitio espectacular merece la pena visitarlo, aunque las cuestas para llegar no lo ponen fácil. ;-)

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¿Did you know that...

It is believed that Araotz is where the conquistador Lope de Aguirre was born, although there is no historical certainty about it. On the contrary, the route does take us past the birthplace of Marshal Elorza, a hamlet where, according to some voices, Lope de Aguirre was actually born.

Don't miss out...

The cave of Sandaili, inside which is the hermitage of St. Elias, a magical place full of legends and great beauty. You will find the path that leads to it on the access road, at the height of the small Araotz reservoir.


Go to What to do in case of a hiking or mountain accident

Go to Hiking equipment What to bring?


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This route has been carried out in the field by SENDITUR on 10-09-2020. The route may vary greatly depending on the time of year, weather conditions and terrain, as well as the actions of third parties and the evolution suffered in the natural environment where it is located. All opinions, advice and/or assessments made by SENDITUR in their descriptions are for guidance only and are subject to and/or refer to the specific conditions of the specific day of the route, referring to that specific day, taken from trained people, with the appropriate experience and with a high level of physical and technical preparation as a reference, as well as correctly equipped.

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