4.8
(4)
57
hikers
5
hikes
Mountaineering routes around Osse-En-Aspe traverse a landscape characterized by rugged peaks, high-altitude plateaus, and deep valleys within the Pyrenees. The region features challenging ascents to prominent summits like Anie Peak, often involving significant elevation gain. Terrain varies from rocky paths and scree slopes to alpine meadows, providing diverse conditions for experienced mountaineers.
Last updated: May 22, 2026
5.0
(1)
21
hikers
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
5.0
(1)
13
hikers
14.8km
06:23
1,050m
1,050m
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

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10
hikers
13.4km
05:32
750m
750m
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
8
hikers
14.1km
05:35
910m
910m
Hard mountaineering route. Very good fitness required. Mostly accessible paths. Sure-footedness required.
4.5
(2)
5
hikers
9.09km
04:06
860m
860m
Moderate mountaineering route. Good fitness required. Mostly accessible paths. Sure-footedness required.
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There is no ibon, it doesn't match the photos. It's just a pond for the animals to drink from.
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A fairly difficult hike when you're not trained (which was my case) but not impossible if you take your time and go at your own pace. On the other hand, it's a very beautiful hike! The landscapes are magnificent. There are two parking lots, the Masousa parking lot and another higher up which saves 45 minutes, but the road is very bumpy.
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If you arrive early you can have minutes of silence
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Exceptional spot. To fully enjoy it, sunrise or sunset are preferred.
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Pleasant cabin and well located for getting to Pic d'Anie in the early morning. During my visit (10/2023) only the SAS entrance to the cabin was accessible. The other 2 rooms were locked. Presence of a water point just a few meters from the cabin (be careful of the noise generated if you spend the night there).
2
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The peak of Arlas forms a beautiful, incisive tooth, which stands out particularly well in the surrounding panoramas. On this point, you are ideally placed to admire his profile. The peak rises to an altitude of 2,044 meters and is located between Navarre in Spain and the Pyrénées-Atlantiques in France.
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A few steps from Spain, surrounded by the Aiguilles de Lescun, Lake Ansabère culminates at an altitude of 1,859 meters in a breathtaking setting!
1
0
Mountaineering routes in Osse-En-Aspe are predominantly challenging, catering to experienced mountaineers. While there are 5 difficult routes, you can find 2 moderate options if you're looking for something less strenuous.
While most routes are difficult, there are a couple of moderate options that might be more accessible. Consider the Pic des Taulères – Mailh Agor loop from Bedous, which is rated moderate and offers a good introduction to the region's terrain.
Many routes start from designated parking areas. Common trailheads include Gouffre de la Pierre-Saint-Martin (Puits Lépineux), Aire de Stationnement, Col de la Pierre Saint-Martin, Aire de Stationnement de Masousa, and the village of Bedous. Specific parking details are usually available on the individual route pages.
Generally, permits are not required for mountaineering in the Pyrenees, including the Osse-En-Aspe region, for standard hiking and climbing. However, it's always advisable to check local regulations, especially if you plan to enter specific protected natural reserves or engage in activities requiring special authorization.
The best time for mountaineering in Osse-En-Aspe is typically from late spring to early autumn (June to September) when the weather is most stable, and snow has largely melted from higher elevations. Outside of these months, conditions can be challenging due to snow, ice, and rapidly changing weather.
Winter mountaineering in Osse-En-Aspe is demanding and suitable only for experienced individuals with appropriate gear and knowledge. Routes can be covered in deep snow and ice, requiring crampons, ice axes, and avalanche awareness. Conditions can change rapidly, so always check local forecasts and avalanche reports.
Given the challenging terrain and high-altitude nature of the routes, essential gear includes sturdy hiking boots, layered clothing suitable for varying weather, waterproof and windproof outerwear, a backpack with sufficient water and food, navigation tools (map, compass, or GPS), and a first-aid kit. For difficult routes, consider trekking poles and potentially a helmet.
Yes, several routes in Osse-En-Aspe are designed as loops. For example, the Refuge closed – Summit of Anie 2504m loop from Aire de Stationnement offers a challenging circular journey to a prominent summit.
The routes offer stunning natural sights. You might encounter landmarks like the Table of the Three Kings (Hiru Erregen Mahaia), the serene Montagnon Lake, or the impressive Sanchèse Waterfall. Many routes also lead to high mountain passes like Petrechema Pass, offering expansive views.
Yes, you can find options for refreshments and food. The Jeandel Hut, Arette is a restaurant in the vicinity. Additionally, there are several huts and gîtes like Ansabère Huts and Refuge de l'Abérouat that may offer services depending on the season.
The komoot community highly rates the mountaineering routes in Osse-En-Aspe, with an average score of 4.8 stars. Reviewers often praise the challenging ascents, the panoramic vistas from high mountain passes, and the rugged, diverse terrain that defines the Pyrenean landscape.
For those looking to explore a less frequented but equally rewarding path, consider the Trail to the Ansabère Huts – Mountain Pond View loop from Aire de Stationnement de Masousa. This difficult route offers stunning views and a sense of solitude.


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