Best caves around Lons-Le-Saunier are found within the Jura Mountains, a region characterized by a rich network of underground caverns. This area offers diverse geological formations shaped over millions of years by water. Visitors can explore various cave systems, from large show caves to smaller, more natural cavities. The landscape provides opportunities to witness the complex subterranean geology of the Jura.
Last updated: July 6, 2026
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Popular around Lons-Le-Saunier
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A small but great cave - flashlight recommended.
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The grotto is currently not open! A fire completely destroyed the visitor center this spring. It is not yet known when the grotto will be open to visitors again. https://www.grottesdesmoidons.com/en/useful-information.htm
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After years of bans or restricted access, the Jura Departmental Speleology Committee reached an agreement with the municipality of Nevy-sur-Seille, and is now tenant of the cavity. The rental lease requires that the entrance be closed by an armored door, and its access reserved for clubs and individual members of the French Speleology Federation, or a foreign federation. Before any visit, to obtain the access code, you must submit a request to the C.D.S du Jura. (http://juraspeleo.ffspeleo.fr/grottes/topoguide/fiches/cassots.htm)
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This small cavity has the ceiling pierced at the beginning and at the end of the gallery. It would have sheltered a hermit.
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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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The Hole of the Moon is a cave dug in the limestone rock of the cliffs overlooking Poligny and its vineyards.
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A good 16 km of underground passages and galleries. A beautiful stream, very rich in stalactite jewelry, but also very dangerous during melting snow or long rainy days. As a result, the cave is also closed and access is only for organized cave exploration accessible.
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The most notable caves in the Jura region are the Grottes de Baume-les-Messieurs and the Grottes des Moidons. Both offer impressive geological formations and guided tours.
Yes, the Grottes des Moidons are particularly family-friendly. They feature a 'bat area' with a labyrinth for children, and parts of the cave are accessible with strollers or wheelchairs due to a new gallery.
The caves in the Lons-le-Saunier region, such as the Grottes de Baume-les-Messieurs and Grottes des Moidons, are renowned for their spectacular stalactites, stalagmites, columns, and underground rivers and lakes. You can also see unique features like the Tufs waterfall emerging from Baume-les-Messieurs.
Guided tours at the main show caves, like the Grottes de Baume-les-Messieurs and Grottes des Moidons, generally last around 50 to 55 minutes.
The temperature inside the caves, such as the Grottes des Moidons, remains a cool +10°C (50°F) year-round. Warm clothing is highly recommended, even during summer months.
Some caves, like Grotte de Saint-Bilbalbo and Entrance to Grotte de la Borne aux Cassots, are categorized as challenging. For these, a flashlight is often recommended, and they may involve more rugged terrain.
The Grottes des Moidons are notable for their sound and light show that enhances the water basins and formations. They are also one of the only caves in the Jura Mountains to be lit by solar power, showcasing an eco-friendly approach.
Yes, some caves have historical significance. For instance, The Lodge at Maillet is a small cavity that is believed to have sheltered a hermit. The View of Poligny from Trou de la Lune is a cave where prehistoric artifacts have been excavated.
Yes, the region offers numerous hiking opportunities. You can find trails like the 'Tour of the Baume Reculée' or 'La Source de l'Ain — loop by Doye' near the caves. For more options, explore the Hiking around Lons-Le-Saunier guide.
The Grottes de Baume-les-Messieurs are considered among the most beautiful caves in France, located 120 meters underground in a picturesque 'reculée'. They feature a 71-meter high vertical underground cave with exceptional acoustics and a new lighting scheme that highlights the geological features.
The Grottes des Planches, once a significant site in the Jura, have been closed for security reasons for over a decade and are unlikely to reopen.
The caves are home to unique inhabitants adapted to the subterranean environment. For example, the Grottes de Baume-les-Messieurs are known for bats and blind shrimp.
Beyond caving, the region offers various outdoor activities. You can find numerous hiking routes, including easy options like the 'GR 59 - Baume-les-Messieurs loop from Cascades des Tufs' near the caves. For more ideas, check out the Easy hikes around Lons-Le-Saunier guide or the Running Trails around Lons-Le-Saunier guide.


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