Natural monuments around Coisia offer diverse landscapes within the Jura region of France. The area features a mix of forests, valleys, and water features, providing varied terrain for exploration. Visitors can discover several natural landmarks and viewpoints that showcase the geological characteristics of the region. This guide details 4 natural monuments, ideal for those seeking hiking trails and scenic spots.
Last updated: July 5, 2026
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Highlight • Viewpoint
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In addition to its view of Lake Coiselet, the Oliferne peak is distinguished by a strange sculpture which stands in the middle of the ruins, like a guardian watching over a castle.
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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 Coisia area offers diverse natural features including caves, waterfalls, forests, and scenic viewpoints. You can discover the impressive Ox Cave with its 20-meter high overhang, the unique moss-covered entrance of Grotte de Corveissiat, and the beautiful Cascade de la Pisse Vache.
Yes, the Chancia Viewpoint is considered family-friendly, offering expansive views of Lake Coiselet and the Bienne valley. Additionally, the walk to Cascade de la Pisse Vache is described as a family walk through the forest.
From Chancia Viewpoint, you can enjoy panoramic views of Lake Coiselet, the Bienne valley, the village of Chancia, and the peak of Oliferne. The Valouse Waterfall also offers a view of the Valouse gorges.
There are various hiking trails in the Coisia area. For example, you can find routes like the 'Pic d'Oliferne Viewpoints Loop' or the 'View of Thoirette – Bois de Charrette loop'. You can explore more options on the Hiking around Coisia guide.
Yes, the region offers opportunities for both cycling and gravel biking. You can find routes like 'Along Lake Coiselet' for touring bicycles or 'Cize Viaduct – Ain Valley loop' for gravel biking. More details are available in the Cycling around Coisia and Gravel biking around Coisia guides.
The caves around Coisia are quite distinct. Ox Cave is known for its grand entrance, featuring a 20-meter high overhang that resembles a palace. Grotte de Corveissiat is an active water cave, notable for its moss-covered entrance, though access inside is restricted to cavers.
While not explicitly 'hidden,' the Grotte de Corveissiat, tucked away in moss-covered woods, offers a magical sight with its spectacular entrance, even if internal access is limited. The Cascade de la Pisse Vache is also reached via a forest walk, offering a charming discovery.
Visitors appreciate the diverse landscapes, from the impressive cave entrances to the expansive viewpoints. The Ox Cave's grand overhang and the panoramic views from Chancia Viewpoint are frequently highlighted. The komoot community has shared over 100 photos, indicating the visual appeal of the area.
Yes, for the Cascade de la Pisse Vache, a booklet titled '8 walks around water' is available for purchase at the local Tourist Office, which includes details on family walks to this waterfall.
The terrain around Coisia is varied, featuring forests, valleys, and water features. You'll encounter paths leading through woods to caves and waterfalls, as well as elevated spots for viewpoints. Some routes, like those near Valouse Waterfall, are rated as intermediate difficulty.
The region is characterized by its geological formations that create impressive caves and gorges. The 20-meter high overhang at Ox Cave is a notable geological feature, as are the active water systems within caves like Grotte de Corveissiat and the gorges around Valouse Waterfall.


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