Caves around La Sagne are found within the Neuchâtel canton of Switzerland, an area known for its diverse natural landscapes and historical sites. The region features significant geological formations, including deep gorges and unique underground systems. These natural features have been historically adapted, offering insights into regional heritage and innovative engineering. The area provides opportunities for exploring both natural rock formations and man-made subterranean structures.
Last updated: June 28, 2026
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Beautiful waterfalls can be seen everywhere.
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Another rock arch on the way through the Gorges de l'Areuse / Areuse Gorge. One of the most beautiful gorges in Switzerland.
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really nice guided tour of the underground mill, also in German; it is unique and cannot be found anywhere else.
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The Pont de Vert is a picturesque site in the Areuse gorges. It is a stone arch bridge which dates from the 18th century. You will immediately understand the reason for the name of the bridge and the nearby cave as the water reflects the green colors of the moss on the overhanging rocks and trees. A magical place to discover. The perfect starting point for a run with a water fountain to fill your bottle.
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The underground mills of Col-des-Roches are a set of mills and underground tunnels built in the 17th century to harness the power of an underground river. A point of interest on your route and perhaps an opportunity to take a break and buy tickets for later.
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If you're looking for a fun break from your run in the Swiss Jura, you can visit the Grotte de l'Ours, near Ponts-de-Martel. This is not a deep cave, but rather a large rock formation with several holes that you can explore. The cave is located in a beautiful little gorge, the Combe Poëta, and the path leading there is already an attraction in itself. You can admire the forest, streams and peat bogs all along the way.
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The Col-des-Roches Underground Mills are a set of mills and underground tunnels built in the 17th century to harness the power of an underground river. You can learn the history and mechanics of this ingenious system through an audio guide or guided tour, and marvel at the sight of the waterwheels and sawmill in action. The temperature inside the caves is constantly 7°C, so don't forget to bring a warm jacket. You can also visit the museum which presents the role and function of mills and hydraulics in the region. The underground mills of Col-des-Roches are a fascinating example of the ingenuity and creativity of man in harmony with nature.
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Near La Sagne, you can explore the Underground Mills of Col-des-Roches, a truly unique site in Europe where a natural cave system was adapted to house hydropowered mills from the 17th to 19th centuries. Another notable spot is the picturesque "grotte voisine" near Pont de Vert in the Gorges de l'Areuse, known for its scenic beauty and integration with a stunning hiking landscape.
The Underground Mills of Col-des-Roches offer a deep dive into regional history, showcasing innovative engineering, agriculture, milling, and the use of hydropower. You can explore the remnants of historical installations, including a reconstructed flour mill, and visit a museum explaining the site's history and principles. The site dates back to 1652 and is an impressive testimony to human ingenuity.
Yes, the region offers several natural rock formations. The Rock tunnel on the hiking trail in the Gorges de l'Areuse provides a cool respite along a trail known for deep crevices. The Bear Cave is a large rock overhang with several holes located in the Combe Poëta gorge, offering an attraction in itself. Additionally, the Baume du Four Shelter appears as a huge rock overhang with hidden tunnels when explored up close.
The Underground Mills of Col-des-Roches are designed to be accessible and engaging for children and families, featuring a museum and exhibitions that explain history and principles. The Bear Cave is also considered family-friendly, offering an easy exploration of a large rock formation with several holes.
The Underground Mills of Col-des-Roches maintain a constant temperature of 7°C, making them a cool escape in summer and a mild environment in colder months. For natural grottoes and rock formations that are part of hiking trails, like those in the Gorges de l'Areuse, spring to autumn generally offer the most pleasant weather for outdoor exploration.
For the Underground Mills of Col-des-Roches, warm clothing is recommended due to the constant 7°C temperature and humidity inside. For other natural caves and grottoes, especially those integrated into hiking trails, comfortable walking shoes and layers of clothing suitable for the weather are advisable, as temperatures can be cooler underground.
Specific public transport routes to individual caves vary. However, the region around La Sagne, including areas like Le Locle (for the Underground Mills) and the Gorges de l'Areuse, is generally accessible by public transport in Switzerland. It is recommended to check local bus and train schedules for the most direct routes to your chosen cave destination.
Yes, parking is typically available near major attractions. For instance, the Underground Mills of Col-des-Roches have visitor parking. For caves located along hiking trails, such as those in the Gorges de l'Areuse, designated trailheads often provide parking facilities.
Some natural rock shelters and trails are dog-friendly. For example, the Baume du Four Shelter is noted as dog-friendly. However, specific rules may apply to indoor attractions like the Underground Mills of Col-des-Roches. Always check individual site regulations before bringing your dog.
The caves around La Sagne are often integrated into scenic landscapes, making them ideal for combining with outdoor activities. You can explore various hiking trails, such as those through the Gorges de l'Areuse, which feature the Rock tunnel on the hiking trail and Pont de Vert. The region also offers extensive opportunities for gravel biking and MTB trails. You can find more information on routes in the Gravel biking around La Sagne, MTB Trails around La Sagne, and Cycling around La Sagne guides.
Yes, guided tours are available for some sites. The Underground Mills of Col-des-Roches offer guided or audio-guided tours to explain their history and mechanics. For natural grottoes along hiking trails, guided tours might be available through local tourism offices, though many are self-explorable.
Visitors appreciate the unique blend of natural beauty and historical ingenuity. The Gorges de l'Areuse are loved for their stunning natural gorge spectacle, deep crevices, and walkways. The Underground Mills of Col-des-Roches are highly valued for their historical significance, unique engineering, and educational experience. The picturesque ambiance of spots like Pont de Vert and the adventure of exploring rock overhangs like the Bear Cave are also frequently highlighted.

