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Saint-Mamet

Top 11 Natural Monuments around Saint-Mamet

Best natural monuments around Saint-Mamet are found in the Haute-Garonne department of France, providing access to the Pyrenees region. This area features diverse natural monuments, including lakes, waterfalls, and mountain passes. These sites offer geological features and opportunities for outdoor activities. The landscape is characterized by its mountainous terrain and water features.

Best natural monuments around Saint-Mamet

  • The most popular natural monuments is Forau de Aiguallut, a natural monument that is a spectacular sinkhole where water from the Aneto…

Last updated: July 5, 2026

Lac d'Oô

Highlight • Lake

Lac d'Oô is a must in the Pyrenees. Perched at 1,507 meters above sea level, this artificial expanse is located on an old glacial lake.

Its emblematic waterfall of 275 …

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Forau de Aiguallut

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It is a well-known tourist attraction. The site is spectacular and the history of this sinkhole makes it even more special. The best time to visit is in spring, after the ice melts.

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Cascade d'Enfer

Highlight • Waterfall

At the end of our hike we were able to look at the waterfall and catch our breath. 😉
We did the loop clockwise.

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Uelhs Deth Joeu Waterfall

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Spectacular waterfall from Aneto.

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Vénasque Lakes

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The Vénasque lakes, also nicknamed the “Booms of Vénasque”, are located at an altitude of 2,250 meters, not far from the refuge of the same name. They offer a magnificent panorama overlooking the valley.

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Tips from the Community

Stefan Michaelis
June 23, 2026, Cascade d'Enfer

The Höllenwasserfall, so named because of the dramatic sounds, is an impressive natural event

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The lake, which I had never heard of before my Pyrenees tour, is obviously a "must see" in this region. Together with the waterfall at the end of the lake, it is also a truly worthwhile hiking destination.

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A fantastic natural spectacle in the already beautiful Pyrenees mountains.

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Impressive waterfall in this area near what is called the Rio de Joèu (Joèu river). In the summer there are usually many people but the area is wide and cool to run through.

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cs 🦦
August 15, 2023, Lac d'Oô

Beautiful turquoise blue reservoir in the middle of the Pyrenees

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Jean-Lo
May 2, 2023, Lac d'Oô

Lake Sausset a few meters after Espingo is the most magnificent of the 3 lakes

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Julien Harté
March 15, 2023, Lac d'Oô

Lake Oô is a must-see in the Pyrenees. Perched at an altitude of 1,507 meters, this artificial expanse is located on an ancient glacial lake. Its emblematic 275 meter waterfall also contributes to the reputation of this remarkable natural site.

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Julien Harté
March 15, 2023, Lac d'Oô

Lac d'Oô is a must in the Pyrenees. Perched at 1,507 meters above sea level, this artificial expanse is located on an old glacial lake. Its emblematic waterfall of 275 meters also contributes to the fame of this remarkable natural site.

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Frequently Asked Questions

What are some of the most popular natural monuments to explore near Saint-Mamet?

Visitors frequently enjoy the spectacular Forau de Aiguallut, a unique sinkhole where glacial water disappears underground. Another highly-rated spot is Lac d'Oô, an artificial lake known for its impressive 275-meter waterfall. The Uelhs Deth Joeu Waterfall, where water emerges from an underground hole, is also a favorite.

Are there family-friendly natural monuments around Saint-Mamet?

Yes, the region offers options suitable for families. The Forau de Aiguallut is considered family-friendly, offering an accessible tour of about an hour and a half. The Uelhs Deth Joeu Waterfall is also noted as family-friendly, with a beautiful forest setting.

What kind of natural features can I expect to see in the Saint-Mamet area?

The natural monuments around Saint-Mamet are characterized by diverse features, including stunning waterfalls like the Cascade d'Enfer, high-altitude lakes such as Lac d'Oô and Ibón de Gorgutes, and unique geological formations like the Forau de Aiguallut sinkhole. Many of these sites offer panoramic viewpoints.

What is the best time to visit the natural monuments around Saint-Mamet?

The spring season is particularly recommended for visiting natural monuments like the Forau de Aiguallut, as the ice melt enhances the hydrological phenomenon. Generally, late spring to early autumn offers pleasant weather for exploring the Pyrenees region.

What outdoor activities can I do near these natural monuments?

The region around Saint-Mamet is excellent for various outdoor activities. You can find numerous hiking trails, including moderate options like the "Pic d'Arrès via Col du Portillon Trail" or the "Sidonie Waterfall – Péquerin Footbridge loop from Saint-Mamet." For cycling enthusiasts, there are challenging routes such as the "Col de Peyresourde and Lac de Génos Loop." You can find more details on these activities in the Hiking around Saint-Mamet and Cycling around Saint-Mamet guides.

Are there specific hiking trails to reach the natural monuments?

Yes, many natural monuments are accessible via hiking trails. For instance, reaching Lac d'Oô involves a physical climb, especially if continuing to Lake Espingo. The Cascade d'Enfer is easily accessible from a car park in the Lis Valley. Always check trail difficulty and conditions before heading out.

What do visitors enjoy most about the natural monuments in this area?

Visitors frequently highlight the spectacular natural beauty and unique geological features. The impressive 275-meter waterfall at Lac d'Oô and the captivating disappearing river at Forau de Aiguallut are often mentioned. The panoramic views from mountain passes like Port de Vénasque are also a major draw for hikers and nature enthusiasts.

Is bathing allowed in the lakes like Ibón de Gorgutes?

Lakes such as Ibón de Gorgutes are protected as part of the Inventory of Singular Wetlands. While specific bathing prohibitions may vary, activities that could affect water quality, such as bathing with chemicals like sunscreen or perfumes, are generally discouraged or prohibited to preserve the natural environment.

What is unique about the Forau de Aiguallut?

The Forau de Aiguallut is a spectacular sinkhole where water from the Aneto glacier disappears underground. This water then resurfaces in the Val d'Aran, becoming one of the sources of the Garonne River, which flows into the Atlantic. This unique hydrological phenomenon makes it a significant natural attraction.

Are there any mountain passes offering panoramic views near Saint-Mamet?

Yes, the Pyrenees region around Saint-Mamet features mountain passes with magnificent panoramic views. The Port de Vénasque (or Puerto de Benasque), located on the Franco-Spanish border at 2,444 meters above sea level, offers breathtaking vistas for hikers and nature enthusiasts.

What is the significance of Lac d'Oô?

Lac d'Oô is an artificial lake situated at 1,507 meters above sea level within an old glacial basin. Its most emblematic feature is a stunning 275-meter waterfall, which significantly contributes to its natural appeal and fame, making it a must-see in the Pyrenees.

How can I find accommodation near the natural monuments around Saint-Mamet?

Saint-Mamet and the surrounding towns in the Haute-Garonne department offer various accommodation options, including hotels, gîtes, and guesthouses. It's advisable to check local tourism websites or booking platforms for options that suit your preferences and proximity to specific natural monuments.

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