4.8
(12)
45
hikers
3
hikes
Mountaineering routes Cathervielle traverse a landscape characterized by mountainous terrain, deep valleys, and alpine lakes. The region features significant elevation changes, with routes often leading to panoramic viewpoints and past impressive waterfalls. Dense forests and open mountain slopes define much of the area, providing varied environments for exploration.
Last updated: July 8, 2026
4.5
(6)
28
hikers
Moderate mountaineering route. Good fitness required. Mostly accessible paths. Sure-footedness required.
5.0
(3)
7
hikers
13.1km
06:21
950m
950m
Hard mountaineering route. Very good fitness required. Mostly accessible paths. Sure-footedness required.

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5.0
(3)
7
hikers
17.5km
06:05
930m
930m
Hard mountaineering route. Very good fitness required. Mostly accessible paths. Sure-footedness required.
3
hikers
6.27km
02:24
370m
370m
Moderate mountaineering route. Good fitness required. Mostly accessible paths. Sure-footedness required.
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Great hike to do in winter with snowshoes/crampons. Great view 😍
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Here the valley opens up to reveal a pretty plain. Continue up the valley to Lake Oô, to enjoy more magnificent views.
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Hike to the stunning Lac d’Oô, a beautiful glacial lake nestled in the Pyrenees. As you approach the lake, you’ll be treated to breathtaking views of its clear, turquoise waters, surrounded by sheer cliffs and lush forest. The hike is moderately challenging, with rocky paths leading to a perfect viewpoint where the lake and surrounding peaks create a truly picturesque scene. Take some time to appreciate the tranquility of the area, where you can also catch a glimpse of the impressive Oô waterfall cascading down the mountainside.
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Beautiful turquoise blue lake and stuff
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Next to the Lac d'Oô bivouac you have the best point of view, the most axial, to admire the Lac d'Oô waterfall.
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A nice place to stop off after the hike. The car park is generously dimensioned, since the Lac d'Oô and the Lac d'Espingo are popular hiking destinations, you should still come early to get a parking space.
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Lac Vert, made up of three basins, is located at an altitude of 2,004 metres. Nestled at the foot of the Pic du Maupas in a green setting, this lake suggests a pleasant break.
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While many routes in the region are challenging, there are moderate options available. For instance, the View of the plain – View of the Lac d'Oô waterfall loop from Granges d'Astau is a moderate 4.3-mile path that offers stunning views without extreme difficulty.
For experienced mountaineers, the region offers several demanding trails. The Bridge near Lake Oô – Lac d'Oô loop from Granges d'Astau is a difficult 8.0-mile route. Another strenuous option is the Waterfalls of the Oô Valley – Lac Vert Waterfalls loop from Les Bourdalès, an 8.1-mile trail with significant elevation changes.
The duration of routes varies based on their length and difficulty. A moderate route like the View of the plain – View of the Lac d'Oô waterfall loop can take around 2 hours 38 minutes. More difficult and longer routes, such as the Waterfalls of the Oô Valley – Lac Vert Waterfalls loop from Les Écharts, can require over 8 hours to complete.
Yes, several routes are designed as loops, allowing you to start and end at the same point. Examples include the popular Bridge near Lake Oô – Lac d'Oô loop from Granges d'Astau and the Sommet de Pouy Louby – Pic du Lion loop from Cazaux-Fréchet-Anéran-Camors.
The routes often lead through landscapes featuring deep valleys, dense forests, and open mountain slopes. You'll encounter impressive waterfalls, such as the Cascade d'Enfer and the Juzet-de-Luchon Waterfall. Many trails also offer views of pristine alpine lakes like Lac d'Oô.
Yes, the region is characterized by high mountain passes and summits. Some routes may offer views or access to points like the Esquierry Pass or the Superbagnères Summit, providing panoramic vistas of the surrounding Pyrenean landscape.
The best time for mountaineering in Cathervielle is typically from late spring through early autumn (June to September) when the weather is generally more stable, and the trails are free of snow at lower to mid-altitudes. Always check local weather forecasts and trail conditions before heading out.
The komoot community highly rates the mountaineering routes in Cathervielle, with an average score of 4.8 stars. Reviewers often praise the stunning natural beauty, the challenging yet rewarding ascents, and the spectacular views of alpine lakes and waterfalls.
Generally, no specific permits are required for day hikes on established trails in this region. However, if you plan to camp or access certain protected areas, it's always advisable to check with local authorities or park information centers for any specific regulations or restrictions that might apply.
Many popular trailheads, especially those leading to well-known areas like Lac d'Oô, often have designated parking areas. For routes starting from Granges d'Astau or Les Bourdalès, you can typically find parking facilities nearby, though they may fill up quickly during peak season.
While the routes themselves are in natural, often remote, settings, you can usually find cafes or small restaurants in the villages or hamlets near the main trailheads, such as Granges d'Astau. It's always a good idea to pack sufficient food and water for your hike, as options might be limited directly on the trails.


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