Route of the stone circles at Labasar

  • Estimated time :40 minutes by car. 2 h 30 min on foot.
  • Distance :12.8 km by track. 6.6 km along the GR 15 path
  • Total Climb-descent :Climb: 956 m ; Descent: 48 m
  • Altitude :Maximum: 1.900 m; Minimum: 993 m
  • Type : Linear.
  • Difficulty :Easy.
  • Itinerary :The track for vehicle access is well defined
  • Track/road type :Depending on the state of the track, it may only be possible to cover the full route in a four-wheel-drive vehicle. The trail is perfectly suitable for mountain bikes. If you wish to walk, it is advis



Panoramic views of the Chistau Valley, Scotch and black pine forest, the Cotiella massif, Basa de la Mora mountain lake.


The cromlechs of Collata de Labasar (3000-700 BC).


The climb up to the Basa de la Mora mountain lake is one of the most popular routes in the Aragonese Pyrenees. On this occasion, we propose to follow the itinerary that sets out from Saravillo, but with a new destination that will undoubtedly surprise you. Your are about to discover one of the least known archaeological sites in Sobrarbe, the stone circles or cromlechs of Collata de Labasar. Nature and history come together in this remarkable spot in the Chistau Valley.

Road directions to starting point: In Aínsa, take the A-138 main road in the direction of Bielsa and France. When you come to the Mesón de Salinas, take the road to the right in the direction of the Chistau Valley. At 5 km, you come to the turn-off to Saravillo. Continue onwards a further kilometre into the village centre.

Starting point:
- By car or mountain bike: the track begins at Saravillo car park at the western edge of the town, where the Mosén Bruno Fierro Information Centre stands.
- On foot: leave your car in the Saravillo car park. In the centre of the village are signs that point the way to the start of the path.

Given that this route can be followed by car or on foot, we will describe both options, mindful of the fact that the track is not always suitable for ordinary or saloon-type cars.

Option A. Route by car along the track

The track begins in Saravillo car park. The first 200 m are tarmacked, but the rest is dirt track and somewhat stony. The small cultivated plots around the village will soon lie behind you and Scotch pine forest will dominate much of the route.

As you gain altitude, you will be able to enjoy the increasingly spectacular and sweeping panoramic views of the valley. Make sure that you visit the Vantage Point, which you come to 4.8 km after setting off. To get there, take the path off to the left and walk the last 60 m. From here you have a magnificent view of the lower reaches of the Chistau Valley, with the Peña de Artiés to the north-east, the village of Sin to the north, and the banks of the River Cinqueta and Saravillo to the north-west.

Return to your car and continue on the route. The track climbs over the remaining 10 km to a high altitude. 1700 m and higher above sea level, black pine forest predominates almost exclusively.

We come at last to the Labasar Pass and Refuge at 1925 m. You can leave your car next to the building and walk through the meadow that stretches to the north-east. In this area, just 20 m from the refuge, are the three most visible, and hence the easiest to find, stone circles. A little further to the north, three more circles have been identified, but they are very difficult to locate as many of the stones are now missing.
This is without doubt a very special and surprising place, filled with an air of mystery. Given that no archaeological excavations have been carried out here, the circles are impossible to date. However, based on research at similar sites in the Pyrenees, it is believed that these stone circles could have been built by peoples who lived in the main from shepherding and who moved their livestock seasonally (transhumance) during the Copper Age and the Bronze Age (3000-700 BC). Most of these cromlechs were built for the purpose of funerary rituals and as places to bury the ashes of cremated bodies.

Before retracing your steps, it is worth walking 20 minutes along the path that leads to shores of the Basa de la Mora, one of the most beautiful mountain lakes in the Pyrenees.

Option B. Route on foot along the path

If you prefer not to use your vehicle to get to Collata de Labasar, you can walk there along the marked path that begins at the square in Saravillo. A wooden signpost points up the street you must take to set off along the path to Labasar Refuge. The first stretch makes its way between stone walls that mark the boundaries of the small plots.

After 15 minutes, you come to a water channel that is concreted over. A fork off to the right here is signposted for Basa de la Mora. The path now begins to climb steadily. Even though some stretches are very steep, it is much more pleasant to go up through the woodland. Keep an eye out for the white and red markings of the GR 15 to make sure you do not miss the path.

After 1 hour and 30 minutes (1470 m), the path emerges into a sweeping curve in the track, where there is a water tank. Continue along the same path. The slope is not as steep as the previous stretch.

As you continue eastwards, you will cross the track on several occasions. Two hours and 30 minutes after you set off, you will come to Collata de Labasar. You can return by the same path.


You must take drinking water with you and wear walking boots. If you are in an ordinary saloon-type car, check in advance to find out the state of the track.