Natural monuments around Le Crouzet are situated in the Doubs department of France, a region characterized by its impressive natural landscapes. The area features a variety of geological formations, including karst springs, deep gorges, and waterfalls carved by rivers. These sites offer opportunities to explore the unique hydrology and biodiversity of the Jura Mountains. The natural environment provides a setting for outdoor activities and discovery.
Last updated: July 2, 2026
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Viewpoint above the Doubs source with beautiful views through a forest clearing to Mouthe and the Doubs river.
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The source of the Doubs River is a powerful karst spring in a heavily karstified area of the Jura Mountains. It lies at an altitude of 937 meters at the foot of the forested, up to 1,419-meter-high Mont Risoux mountain range, which straddles the border between France and Switzerland. The Doubs River rises from a small, approximately five-meter-deep spring basin in a cave in the rock.
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The Bief de la Ruine waterfall is located in the spectacular Malvaux Gorge. One of the most astonishing features of this waterfall is the fact that it only comes alive after heavy rainfall or during snowmelt. When it dries, it gives way to the spectacle of the carved stone, revealing the "Creux des Joyaux," a natural cave where the water swirls with varying degrees of vigor, polishing a multitude of limestone pebbles thanks to the force of its current.
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waterfalls don't always flow
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Very easy to access following the Jura Z between Foncine le Bas and Planches en Montagne, along the SAINE gorges: The color of the water has nothing to envy of that of the lagoons of the islands ;-)
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There was no waterfall when we were there but it looks beautiful. The drug is also beautiful.
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The Serpentine, (first tributary of the Ain river whose source is located a little higher) forms a small lake near the ruins of a mill. It is from a cornice that this beautiful natural waterfall 15 meters high comes to life when the water level is sufficient.
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Very impressive, about 1 km walk from the parking lot nearby, swimming not possible and not recommended
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The region around Le Crouzet is rich with natural wonders. Among the most impressive are The source of the Doubs, a powerful karst spring in the Jura Mountains, and the dramatic Cascades & Gorges de la Langouette near Les Planches-en-Montagne, where the Saine River carves a deep canyon with waterfalls. Another notable site is the Ain Spring, known for its impressive water volume right at its beginning.
Yes, several natural monuments are suitable for families. The source of the Doubs offers an easy interpretive trail, perfect for all ages, with information panels and a belvedere. The Ain Spring also features footbridges and interpretation panels, making it a relaxing and educational spot for families to explore.
The natural monuments around Le Crouzet showcase diverse geological formations. You'll encounter powerful karst springs like The source of the Doubs, deep gorges carved by rivers such as the Cascades & Gorges de la Langouette, and impressive waterfalls like Bief de la Ruine Waterfalls. The region's karst landscape also features unique formations like the 28-meter funnel-shaped chasm of Le Creux Maldru.
The area offers a variety of outdoor activities. You can enjoy hiking on trails around sites like The source of the Doubs or the Cascades & Gorges de la Langouette. For more extensive adventures, there are numerous running and cycling routes. You can find detailed routes for hiking, running, and cycling around Le Crouzet.
Many natural monuments, especially waterfalls, are particularly spectacular after heavy rainfall or during snowmelt, typically in spring. Summer offers pleasant temperatures for hiking and exploring, with sites like the Cascades & Gorges de la Langouette providing a refreshing escape. The Doubs River source maintains a consistently cold temperature year-round, making it a unique visit in any season.
Absolutely. The region is renowned for its waterfalls. The Cascades & Gorges de la Langouette feature waterfalls cascading over 40 meters. Bief de la Ruine Waterfalls in the Malvaux Gorge are impressive, especially after heavy rain or snowmelt. Another beautiful cascade is the Moulin du Saut Waterfall, which comes alive when the water level is sufficient.
Visitors frequently appreciate the raw natural beauty and the tranquility of the sites. The impressive volume of water at river sources like Ain Spring and the dramatic landscapes of gorges and waterfalls are often highlighted. The interpretive trails and viewpoints also enhance the experience, allowing for both discovery and appreciation of the unique environment.
While popular sites like The source of the Doubs attract many, exploring the smaller, less-known trails around the Malvaux Gorge, where Bief de la Ruine Waterfalls are located, can offer a more secluded experience. The Le Creux Maldru chasm, nestled in the Mont-Noir forest, also provides a unique and perhaps less-traveled natural exploration opportunity.
Yes, many areas offer circular walking routes that allow you to fully experience the natural monuments. For instance, there are hiking routes like the 'Moutat Peat Bog – The source of the Doubs loop from Petite-Chaux' which incorporates The source of the Doubs. You can explore various hiking guides for circular options.
For hiking and exploring the natural monuments, sturdy hiking shoes are highly recommended, especially for sites with uneven or steep terrain like the Cascades & Gorges de la Langouette. Layered clothing is advisable as temperatures can vary, and waterproof gear might be useful, particularly if visiting during spring or after rainfall when waterfalls are most active.
Yes, the Cascades & Gorges de la Langouette near Les Planches-en-Montagne are known for offering canyoning activities. This includes options for jumps, rope descents, and even a zip line, providing an adventurous way to experience the dramatic gorges and waterfalls.


Extend your search for the best caves by checking out these guides of the top ones around Le Crouzet: