Best caves around Saint-André-En-Royans are situated in the Vercors Regional Natural Park, a region known for its diverse natural landscapes and significant underground formations. This area serves as a gateway to various subterranean wonders, offering insights into geological processes and prehistoric human activity. The caves here present a range of experiences, from vast chambers with unique mineral formations to sites with archaeological importance.
Last updated: June 22, 2026
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the waterfall dominates the Bournillon cave
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The Moulin-Marquis waterfall or Bournillon waterfall is a French waterfall about 400 meters high. It is located in Choranche in Isère, in the Bournillon cirque, downstream from the Bourne gorges.
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Nice little place, the climb up to here is still manageable. Nice views nonetheless.
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You have to go take a look before or after visiting the Choranche cave. It's not far at all and the trail is accessible even to children. The cave is easily visible (staying outside) without specific equipment. You can then go see the waterfall.
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This underground landscape once invaded by water is now punctuated by rock sculptures with natural pigments. Through objects found in this millennial cave, we relive the daily life of Homo Sapiens. During the visit, the guide illustrates the formation of this cavity and its occupation during the last ice age. More info here: https://www.visites-nature-vercors.com/fr/grotte-de-thais/decouvrir/
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Easy climb, ideal for the kids, to a majestic cave!
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An underground world in the heart of a picturesque village. https://www.visites-nature-vercors.com/fr/grotte-de-thais/decouvrir/
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Arrived in Choranche from Presle, take advantage of this stopover to refill your water. You can easily get supplies in the village or by going for a hike to the Gournier waterfall where you will also find a shop near the entrance to the Gournier cave. Choranche holds in its heart the waterfall and the cave of Gournier. Real unusual, the cave of Gournier contains an underground lake that you will have to cross to start your caving excursion. Another portion of the cave is open to guided tours. For more information on the site and the opening to visits of the cave follow these links: Caving, The cave of Gournier | Isère Tourisme (isere-tourisme.com) the Grotte de Choranche, an exceptional natural place in the heart of Vercors! (visite-nature-vercors.com)
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The caves around Saint-André-En-Royans offer diverse natural wonders. The Grotte de Choranche is renowned for its exceptional concentration of delicate 'fistulous' stalactites, some reaching up to three meters long, as well as emerald green underground lakes. Thaïs Cave is distinguished by its striking red and black colored concretions, formed by naturally pigmented minerals and water sculpting.
Yes, the Grotte de Thaïs is a significant historical site. It was inhabited by Homo Sapiens approximately 15,000 years ago during the Ice Age. Guided tours discuss evidence of their daily life, including tools and techniques, and highlight the discovery of the 'Ticked Bone N°250', considered one of the earliest forms of human annotation.
Many caves in the region are family-friendly. Both Gournier Cave and Thaïs Cave are categorized as family-friendly. The Grotte de Choranche also offers an engaging guided tour with a sound and light show that captivates visitors of all ages.
Guided tours for both the Grotte de Choranche and the Grotte de Thaïs typically last about one hour, providing a comprehensive experience of their geological and historical features.
The Vercors Regional Natural Park offers numerous outdoor activities. You can find various hiking trails, including easy loops like 'Hanging houses – White Waterfall' from Pont-en-Royans. For cyclists, there are gravel biking and road cycling routes, such as the challenging 'Cirque of Combe Laval – Machine Pass loop'.
Yes, there are several hiking opportunities. Near Gournier Cave, a trail leads to a nearby waterfall and is accessible even to children. The wider region offers a variety of hiking trails, ranging from easy to moderate, allowing you to explore the natural beauty of the Vercors.
The Grotte de Thaïs is generally open from early April to mid-October. While specific opening hours for all caves vary by season, the warmer months (spring to autumn) are typically ideal for visiting, as they also allow for comfortable enjoyment of the surrounding outdoor activities in the Vercors Regional Natural Park.
Caves maintain a cool, constant temperature year-round, typically around 10-12°C (50-54°F), regardless of the outside weather. It is advisable to wear warm layers and comfortable, closed-toe shoes with good grip, as paths can sometimes be damp.
Major cave attractions like the Grotte de Choranche and Grotte de Thaïs typically have dedicated parking facilities for visitors. It's always a good idea to check their official websites for specific parking information before your visit.
Yes, the villages surrounding the caves, such as Saint-André-En-Royans and Pont-en-Royans, offer various cafes and restaurants. You can also find opportunities to refill water or purchase supplies in Choranche, especially near the entrance to the Gournier Cave.
The Grotte de Choranche focuses on spectacular geological formations, particularly its unique fistulous stalactites and underground lakes, culminating in a 'son et lumière' show. The Grotte de Thaïs offers a blend of geology and prehistory, showcasing distinctive red and black concretions alongside insights into Homo Sapiens' life during the Ice Age, making it a journey through both natural and human history.
Visitors frequently appreciate the breathtaking natural sculptures carved by water over millennia, the immersive guided tours, and the unique geological formations like the fistulous stalactites in Choranche. The historical insights provided by sites like Thaïs Cave, along with the picturesque underground rivers and waterfalls, also receive high praise from the komoot community.


Extend your search for the best caves by checking out these guides of the top ones around Saint-André-En-Royans: