Best natural monuments around Oz feature a diverse landscape of lakes and mountain passes. This region offers a variety of natural formations, from serene alpine lakes to challenging mountain routes. These sites provide opportunities to explore the area's geological features and natural beauty. The natural monuments are well-suited for outdoor activities and offer scenic views.
Last updated: October 5, 2026
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Highlight • Lake
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Popular around Oz
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The most beautiful hill to climb in these areas.
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There are no crowds here, just you, the mountain, the wind, and the sensation of pedaling on one of the remote peaks of the French Alps. The summit, at almost 2,000 meters, offers a 360° panorama that erases fatigue and ignites the cycling spirit.
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Magnificent lake! Accessible to all! As a bonus, you'll find ibexes and a few marmots if you're lucky. For the more courageous, you can climb to an altitude of 2,900 m by continuing on the path with a magnificent view if the sky is clear!
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A busy hiking trail in summer. All those lakes and vistas are beautiful.
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Stunning - definitely worth a little detour off the cycle path
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Oz is known for its diverse natural landscape, primarily featuring serene alpine lakes and challenging mountain passes. You'll find natural formations that offer opportunities to explore geological features and enjoy scenic views, such as Lake Achard and Sarenne Pass.
Yes, several natural monuments around Oz are great for families. Lake Crozet is a superb lake perched at 1,974 meters, offering magnificent views and a relatively constant slope for walking. The Buclet pond is also very family-friendly, providing many places to rest and picnic from spring to summer.
Visitors enjoy a variety of activities. At Lake Achard, hiking and picnicking are popular, and it's also suitable for snowshoeing in winter. The Buclet pond is ideal for relaxing, walking, and even mountain biking around the lake. Mountain passes like Sarenne Pass are popular for challenging hikes and bike rides.
Swimming is generally regulated to protect these natural sites. At Lake Achard, swimming is forbidden. However, at the Buclet pond, swimming is tolerated, though not supervised, and the blue water allows you to see fish.
Absolutely. Sarenne Pass is a challenging mountain pass, culminating at nearly 2000 meters, requiring good physical condition for both cycling and hiking. It offers extensive views and is considered a true natural spectacle.
The best time depends on your preferred activities. The Buclet pond is accessible and enjoyable from spring to summer for picnics and walks. Lake Achard is a popular destination both in winter (for snowshoeing) and summer (for hiking and picnicking).
Rules for dogs vary by location. At Lake Achard, dogs must be kept on a leash to protect the site.
Many natural monuments in Oz offer stunning views. From Lake Crozet, you get a beautiful view of the Charterhouse and magnificent mirror-like water surrounded by imposing rocky peaks. Sarenne Pass provides extensive views of the surrounding mountains.
The region offers a wide range of outdoor activities. For hiking, you can explore routes like the 'Lower Lakes loop from l'Alpette' or the 'Tour of Lac du Verney from Oz Village'. Mountain biking trails are available, including those around Lac de la Faucille. Road cycling enthusiasts can tackle challenging routes such as the 'Ornon Pass – Viaduct of Lac du Verney loop'. You can find more details on these activities in the Hiking around Oz and Road Cycling Routes around Oz guides.
Yes, there are numerous hiking trails. Near the lakes, you can find routes like the 'Lower Lakes loop from l'Alpette' or the 'Tour of the lakes via l'Alpette'. For more challenging mountain hikes, consider the 'Sarenne Pass – Croix de Cassini loop from Clavans-en-Haut-Oisans'. Explore more options in the Hiking around Oz and Mountain Hikes around Oz guides.
Visitors frequently praise the scenic beauty and tranquility. They appreciate the clear, mirror-like waters of lakes like Lake Crozet and the extensive, natural spectacles offered by mountain passes such as Sarenne Pass. The accessibility of spots like Lake Achard for picnics and walks is also a highlight.
Yes, the Buclet pond offers a tour around the lake that can be done by mountain bike. Additionally, the area around Lac de la Faucille features mountain bike trails, though some passages may be difficult and require pushing or portage.


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