Best natural monuments around Saint-Martin-Du-Frêne, a commune in the Ain department of France, provide access to scenic natural sites. The area is characterized by its natural landscape, including glacial lakes and geological formations, offering opportunities for outdoor exploration. These natural landmarks and viewpoints are situated within the Auvergne-Rhône-Alpes region, known for its diverse terrain.
Last updated: July 16, 2026
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Beautiful, simple, easy walk; lots of traffic noise on the "road" section, a bit of a shame, but the color of the water is magical
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We tried the Arc'Aïk Battle for our fun day: it's awesome! Definitely worth doing! The refreshments offered by the organizers were a big plus (the EcoCUPs are very beautiful!).
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The dozens of footprints found at this site date back 150 million years. They correspond to traces of sauropods that lived in the Jurassic.
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Natural jewel, sapphire blue or emerald green waters, nautical activities.
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In the Magdalenian (17,000 to 14,000 years before present) the caves served as a shelter for prehistoric people. During the excavations, weapons, tools and bones came to light. Wikipedia.
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The Cerdon Caves are located in the French communes of Cerdon and Labalme, in the department of Ain in the Auvergne-Rhône-Alpes region. They house an archaeological site from the Magdalenian period. They are open to visitors for their speleological interest. Wikipedia
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The northern part of the lake borders the village of Port.
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The area around Saint-Martin-Du-Frêne offers diverse natural features. You can visit the stunning Lake Nantua, known for its sapphire and emerald colors and backed by limestone cliffs. There's also the serene Cascade de la Pisse Vache, a waterfall nestled within a forest, and the fascinating Dinosaur Footprints of Villette, a paleontological site with traces from 150 million years ago.
Yes, several natural sites are suitable for families. Lake Nantua is great for walks, and the path to Cascade de la Pisse Vache is described as a family walk through the forest. The Dinosaur Footprints of Villette offer an educational and engaging experience for all ages. Additionally, the Cerdon Caves are open to visitors and provide an interesting historical and geological outing.
The region features unique historical natural sites. The Dinosaur Footprints of Villette are a paleontological site where you can see traces of Sauropods from the Jurassic period, dating back 150 million years. The Cerdon Caves also served as a shelter for prehistoric people during the Magdalenian period, with archaeological findings like weapons, tools, and bones.
The area around Saint-Martin-Du-Frêne is excellent for outdoor activities, especially cycling. You can find various routes for touring bicycles, mountain bikes, and road bikes. For detailed routes and guides, explore the Cycling around Saint-Martin-Du-Frêne, MTB Trails around Saint-Martin-Du-Frêne, and Road Cycling Routes around Saint-Martin-Du-Frêne guides.
Yes, the region is well-regarded for its hiking opportunities. While specific hiking routes directly linked to these natural monuments aren't detailed here, the area around Saint-Martin-Du-Frêne, particularly with views of Lac de Nantua, offers numerous trails. The walk to Cascade de la Pisse Vache is a pleasant family walk through the forest.
Visitors particularly appreciate the scenic beauty and the unique experiences offered. The glacial Lake Nantua is often praised for its stunning colors and the pleasant walks it offers. The historical significance of the Dinosaur Footprints of Villette and the archaeological interest of the Cerdon Caves are also highly valued.
The area offers several impressive viewpoints. The limestone cliffs backing Lake Nantua provide panoramic views of the picturesque lake. Higher elevations in the surrounding Monts d'Ain can also offer sweeping vistas, including the possibility of seeing Mont Blanc on clear days.
When visiting the Cerdon Caves, it's advisable to dress warmly, as temperatures inside can be quite cool, around 4°C. The caves are known for their speleological interest and house an archaeological site from the Magdalenian period, where prehistoric artifacts have been found.
While specific seasonal recommendations for each site are not provided, the region's natural beauty, especially around Lake Nantua and its hiking trails, can be enjoyed across different seasons. Spring and autumn often offer pleasant weather for outdoor activities and vibrant natural colors. Clear days are best for panoramic views.
Beyond the listed highlights, the broader region around Saint-Martin-Du-Frêne is known for its diverse natural environment within the Monts d'Ain. While not explicitly detailed as natural monuments, sites like Les Glacières de Sylans are mentioned as attractions, suggesting further geological or scenic interest worth exploring for nature enthusiasts.
For more information on walks to waterfalls, including Cascade de la Pisse Vache, you can often find local guides. A booklet titled "8 walks around water" is available for sale at the Tourist Office in the region, which might provide details on this and other water-related trails.


Extend your search for the best caves by checking out these guides of the top ones around Saint-Martin-Du-Frêne: