Best canyons around Chailly-En-Bière are located within the Fontainebleau Forest, notably the Gorges d'Apremont. These areas are characterized by impressive sandstone boulders and distinct geological formations. The landscape offers a variety of terrains, including forest paths, sandy sections, and rocky passages. It serves as a destination for hiking and bouldering.
Last updated: July 5, 2026
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The mouse cave is a Milly classic that all children know. It is a large cavity about 20 meters long, where you cannot stand up. It is even possible to exit through a narrow passage.
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The cave of the oath is quite surprising, especially because the vault is made of a single rock. The letters D.F.D were engraved on the cave by Denecourt himself and mean "Last Madness Denecourt".
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Forming a bottleneck where several paths meet. A magnificent landscape in all seasons. The pleasure of riding here!
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It's a great passage on the sidelines of the Denecourt-Colinet trail n ° 8, where we slalom between the rocks! It is as beautiful as it is fun.
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The Oath Cave is quite surprising, especially because the vault is made of a single rock. The letters D.F.D were engraved on the cave by Denecourt himself and mean "Last Folie Denecourt".
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Here is a very nice passage of the Denecourt-Colinet trail n ° 6, which overhangs the forest and makes us walk on huge rocks.
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Walk to the acute mountain, near the pheasant farm in Fontainebleau. The cave of the oath to see, in full course, one does not expect it and yet.
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The canyons around Chailly-En-Bière, primarily within the Fontainebleau Forest, are known for their impressive sandstone boulders and unique geological formations. You'll find spectacular rock formations like 'Elephant Rock' and the 'Dame d'Apremont'. Highlights include the Grotte du Serment, which features a vault made of a single rock, and the Apremont gorge with its large rocks and varied terrain.
Yes, several trails offer unique experiences. The Apremont gorge features a passage of the Denecourt-Colinet trail no. 6, which involves walking on large rocks and offers views over the forest. Another great passage is in the Gorges du Houx, part of the Denecourt-Colinet trail no. 8, where you can navigate between rocks. The Sentier de l'Érosion in the Gorges d'Apremont also includes a notable 149-step wooden staircase.
The area offers a diverse mix of terrains. You can expect forest paths, sandy sections, and rocky passages. Some trails, like those in the Apremont gorge, involve walking on large rocks, while others, such as the Gorges du Houx, require navigating between boulders.
While beautiful year-round, late summer and early autumn (August/September) are particularly stunning. During this period, the Gorges d'Apremont transform with a vibrant display of heather blooms, creating a 'breathtaking purple carpet' across the landscape.
Absolutely. The Gorges d'Apremont are a globally recognized bouldering area, famous for hundreds of sandstone boulders of varying difficulty levels. It's historically significant in the climbing world, being where the 'Font grade' for bouldering originated. Even if you don't climb, observing the unique rock formations used by climbers is impressive. For more information on bouldering in Fontainebleau, you can visit Wikipedia's page on Fontainebleau rock climbing.
Beyond exploring the gorges, the region offers a variety of outdoor activities. You can find numerous hiking trails, such as the 'Circuit des Peintres de Barbizon' or the 'Lion-Shaped Rock Formation – Apremont gorge loop'. There are also options for gravel biking and running. For more details on these activities, check out the hiking guide, gravel biking guide, and running trails guide around Chailly-En-Bière.
Yes, the Apremont Gorges Panorama offers breathtaking views of the surrounding vegetation. It's a technical rockgarden area that provides expansive vistas, which can be particularly striking in different seasons.
The Grotte du Serment (Oath Cave) is a notable spot, featuring a vault made of a single rock with the letters D.F.D (meaning 'Last Folie Denecourt') engraved by Denecourt himself. Additionally, the Bandits' Cave within the Gorges d'Apremont adds a touch of mystery to the hiking experience.
The Gorges d'Apremont are easily accessible from nearby areas like Barbizon and Fontainebleau. There are dedicated parking areas and well-indicated starting points for hikes, making it convenient for visitors to explore the region.
Visitors appreciate the natural tranquility and beauty of the area, offering a peaceful escape. The diverse landscapes, from forest paths to rocky passages, make for engaging hiking. The unique rock formations, especially for bouldering, are also a major draw. Many find the experience of slaloming between rocks in places like the Gorges du Houx both beautiful and fun.
While the Gorges d'Apremont are well-known, exploring areas like the Gorge aux Néfliers – Route du Milan can offer a slightly different experience. This spot forms a bottleneck where several paths meet, providing a magnificent landscape that changes with the seasons and is appreciated by those who enjoy riding through it.


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