Natural monuments around Saint-Malo-De-Guersac are primarily centered on the vast wetland ecosystem of the Parc Naturel Régional de Brière. This region is recognized as one of Europe's biologically rich areas, featuring extensive marshlands, reed beds, and canals. Saint-Malo-De-Guersac serves as a key entry point to this preserved landscape, offering insights into its unique flora and fauna. The area is characterized by its tranquil atmosphere and expansive natural features.
Last updated: May 22, 2026
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This megalithic tomb, built around 4300 BC, is the oldest monument in Loire Atlantique, dating back over 6,000 years.
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Situated in the middle of a field in the village of Bergon. The road to it is well signposted and ends in a gravel path. Good for cycling
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Unfortunately, you have to pre-book a time slot. Attention: Access to the many paths south of the house is only guided!!
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This 6,000-year-old Neolithic burial mound is worth a visit. It is open for guided tours in July and August, if there is something you want to do after your run is over.
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This 6000 year old Neolithic burial mound is worth a visit. Open for guided tours in July and August.
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Discovered in 1873, the Dissignac Tumulus is a burial mound five kilometers west of Saint-Nazaire in the Loire-Atlantique department in the Pays de la Loire region of France. It covers two dolmens with parallel corridors, each eleven meters long. (@wikipedia)
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Crossac is a small village known for its surrounding menhirs, such as the Barbière dolmen or the Bois Hoël menhir. The town itself has small shops of basic necessities (bakery, delicatessen, pharmacy). Gateway to the Brière, the village is also crossed by the famous GR 3.
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I strongly advise against taking these trails before the summer! We tested them on May 20. It was just awful! You had to push our bikes in several places where the mud and the muddy water reached our knees. We did 1.5 km in 30 minutes. I don't wish that on anyone.
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The region is primarily centered on the vast wetland ecosystem of the Parc Naturel Régional de Brière, which is the second-largest marsh area in France. You'll encounter extensive marshlands, reed beds, canals, and rivers. Key features include the Port of Bréca, a significant canal and river feature within the marshland, and the Pierre Constant Site – Brière Marsh Nature Reserve, which offers an observatory for birds.
Yes, several natural monuments are suitable for families. The Tumulus of Dissignac, an ancient Neolithic burial mound, offers guided tours in July and August that can be an engaging historical experience for all ages. The Pierre Constant Site – Brière Marsh Nature Reserve is also family-friendly, providing opportunities for birdwatching from its observatory.
The summer months, particularly July and August, are ideal for guided tours at sites like the Tumulus of Dissignac and access to internal paths at the Réserve Naturelle – Site de Pierre Constant. For birdwatching, different seasons offer unique opportunities, but the wetlands are generally rich in wildlife year-round. Be aware that some trails, especially near the Port of Bréca, can be very muddy and challenging outside of summer.
Absolutely! The region, especially the Réserve Naturelle – Site de Pierre Constant, is a prime destination for birdwatching. The site features an ornithological observatory where you can spot various species such as Spoonbills, Bluebirds, Egrets, Northern Shovelers, Gadwalls, Mallards, and various wading birds. Remember to bring binoculars for the best experience.
Yes, the area combines natural beauty with ancient history. The Tumulus of Dissignac is a significant archeological site and natural monument, a 6000-year-old Neolithic burial mound. Another historical natural monument is the Wolf Stone Dolmen, a megalithic structure situated in a field near the village of Bergon.
The Brière marshland offers a variety of outdoor activities. You can explore the area through boat trips (chaland rides) or embark on numerous trails. For hiking, cycling, and running, you'll find routes like the 'Rozé Port and Viewpoint – Rozé Locks loop' or 'Island of Fédrun' trails. You can find more details on specific routes in the Hiking around Saint-Malo-De-Guersac, Cycling around Saint-Malo-De-Guersac, and Running Trails around Saint-Malo-De-Guersac guides.
Given the wetland environment of the Brière marsh, it's advisable to wear appropriate footwear, such as waterproof hiking boots, especially outside of the driest summer months. Layers of clothing are also recommended to adapt to changing weather conditions. For birdwatching, consider neutral colors to blend in with the environment.
Yes, access to the internal paths of the Réserve Naturelle – Site de Pierre Constant is typically available via guided tours during July and August. For the observatory, while generally accessible, it's recommended to check for any pre-booking requirements or time slots, as mentioned by visitors. You can find more information on the Saint-Nazaire Tourism website: Reserve Naturelle – Site de Pierre Constant.
Visitors appreciate the tranquil atmosphere and expansive landscapes of the Brière marsh. The rich biodiversity, especially the birdwatching opportunities at sites like the Pierre Constant Site, is a major draw. The unique blend of natural beauty with historical elements, such as the 6000-year-old Tumulus of Dissignac, also receives high praise.
The Port de Rozé in Saint-Malo-De-Guersac is an excellent starting point for exploring the Brière marshes and offers breathtaking panoramic views. After climbing 128 steps to its belvedere, you can take in the expansive wetland landscape. This location also serves as a gateway to trails that traverse the islands of Brière.
Yes, the Parc Naturel Régional de Brière is known for its traditional thatched-roof houses (chaumières), with Brière having the highest density of these in France. You can discover charming villages with unique architecture within the park. Crossac, a village known for its surrounding menhirs and small shops, also serves as a gateway to the Brière.
While specific public transport routes directly to all natural monuments might be limited, Saint-Malo-De-Guersac itself is a key entry point to the Parc Naturel Régional de Brière. It's advisable to check local bus schedules or regional transport options that connect to Saint-Malo-De-Guersac or nearby villages, and then consider walking or cycling to the specific sites. For detailed local transport information, you might consult the official Saint-Nazaire tourism website: Saint-Nazaire Tourisme.


Extend your search for the best caves by checking out these guides of the top ones around Saint-Malo-De-Guersac: