Natural monuments around Thoirette, now part of Thoirette-Coisia in the Jura department, are characterized by the region's diverse geological features and picturesque landscapes. Situated on the banks of the Ain river and within the "Petite Montagne" region, the area offers a blend of river valleys, forested hills, and ancient geological formations. The landscape is shaped by the Jura mountains, providing varied altitudes and scenic views. This environment makes it suitable for exploring natural features and outdoor activities.
Last updated: June 21, 2026
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An active water cave that is locked. Only the cavers have access here.
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So many things to see from here! A beautiful view of Lake Coiselet and the Bienne valley. From here, you can also see the village of Chancia and the peak of Oliferne.
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The entrance to this cave is perhaps one of the grandest. Its 20 meter high overhang is reminiscent of a grand palace.
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Hidden in the moss-covered woods, this magical cave is a sight to behold. Although it is no longer permitted to enter the cave, its entrance is spectacular. Inside the cave there are submerged sections that have been explored by divers.
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Starting from the hamlet of Bombois on the left bank of the Ain valley, a family walk in the forest leads to this waterfall with its funny name. Find "8 walks around water" in a booklet on sale for €2 at the Tourist Office
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Viewpoint over Lake Coiselet from the heights of Chancia
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The region around Thoirette-Coisia is rich in geological history. A truly unique feature is the Sauropod Tracks near Coisia, fossilized dinosaur footprints from the Jurassic period, offering a glimpse into the area's ancient past. You can also explore impressive cave formations like the Ox Cave, known for its grand 20-meter high overhang, and the spectacular entrance of Grotte de Corveissiat, an active water cave hidden in moss-covered woods.
Yes, several natural monuments are suitable for families. The Chancia Viewpoint offers beautiful panoramic views of Lake Coiselet and the Bienne valley, perfect for a relaxed outing. Another great option is the Cascade de la Pisse Vache, a waterfall accessible via a family-friendly walk through the forest starting from the hamlet of Bombois.
For breathtaking views, head to Mont Myon, a summit at 662m with an orientation table to help you identify the surrounding landscapes. It also has picnic tables and a shelter. The Chancia Viewpoint also provides stunning vistas over Lake Coiselet and the Bienne valley.
The region offers diverse outdoor activities. You can find numerous trails for running, cycling, and gravel biking. For running, explore routes like the 'Belvédère d Échazeaux – Château de Montdidier (ruine) loop' from Thoirette-Coisia. Cyclists can enjoy routes such as the 'Cize-Bolozon Viaduct loop' or the 'View of Lac de Coiselet – Restaurant le Pont loop'. For more details and route options, check out the Running Trails around Thoirette, Cycling around Thoirette, and Gravel biking around Thoirette guides.
Yes, the area features notable caves. The Ox Cave has a magnificent 20-meter high overhang at its entrance, making it a grand sight. While the Grotte de Corveissiat is an active water cave with a spectacular entrance, access inside is restricted to cavers due to submerged sections.
The region's natural beauty, characterized by the Ain river and the 'Petite Montagne' of the Jura, is enjoyable throughout the warmer months, typically from spring to autumn. During these seasons, the weather is generally favorable for hiking, cycling, and exploring the outdoor sites like viewpoints and waterfalls. Winter can offer a different, serene experience, but some trails might be less accessible.
Visitors frequently appreciate the diverse geological formations and the picturesque landscapes. The grand entrance of the Ox Cave is often highlighted, as is the magical, moss-covered setting of the Grotte de Corveissiat. The panoramic views from Mont Myon and the Chancia Viewpoint are also highly rated for their beauty and tranquility.
Yes, you can visit the Cascade de la Pisse Vache. This waterfall is located in a forest and can be reached via a pleasant family walk starting from the hamlet of Bombois, on the left bank of the Ain valley.
The terrain around Thoirette, situated in the Jura department, is characterized by a mix of hilly and forested landscapes. You'll encounter diverse geological formations, including river valleys along the Ain, anticlines, and glacial depressions. Altitudes vary from approximately 275 meters to 635 meters, offering varied views and microclimates, typical of the 'Petite Montagne' region.
Absolutely. The region provides excellent opportunities for both cycling and gravel biking. For challenging cycling, consider the 'View of Lac de Coiselet – Restaurant le Pont loop' which is 45.8 km. Gravel bikers can tackle routes like the 'Cize Viaduct – Ain Valley loop' (61.3 km) or the 'Along Lake Coiselet loop' (68.3 km). You can find more detailed routes in the Cycling around Thoirette and Gravel biking around Thoirette guides.
Yes, Mont Myon is an excellent spot for this. At the summit, you'll find picnic tables and a shelter, allowing you to relax and enjoy a break while taking in the panoramic views from the orientation table.


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