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France
Pays de la Loire
Saint-Nazaire

Saint-Malo-De-Guersac

Top 4 Natural Monuments around Saint-Malo-De-Guersac

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.

Best natural monuments around Saint-Malo-De-Guersac

  • The most popular natural monuments is Port of Bréca, a natural monument that features a canal and river. It is a significant natural feature within the Brière marshland.
  • Another must-see spot is Tumulus of Dissignac, an archeological site and natural monument. This 6000-year-old Neolithic burial mound is open for guided tours in July and August.
  • Visitors also love Pierre Constant Site – Brière Marsh Nature Reserve, a nature reserve and viewpoint. This site offers an observatory for birds in the heart of the marsh, providing opportunities for wildlife observation.
  • Saint-Malo-De-Guersac is known for its nature reserves, ancient burial mounds, and marshland features. The area offers a variety of natural monuments to see and explore, from historical landmarks to protected wetland ecosystems.
  • The natural monuments around Saint-Malo-De-Guersac are appreciated by the komoot community, with over 100 upvotes and 23 photos shared by visitors.

Last updated: May 22, 2026

Tumulus of Dissignac

Highlight • Historical Site

The Dissignac tumulus is one of the oldest sites in the region: it dates back 6000 years ago. A visit to this megalithic tomb is a must! That said, you must book a guided tour of around 45 minutes which only takes place in summer.

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Port of Bréca

Highlight • Natural Monument

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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An observatory for birds in the heart of the marsh, come with binoculars!

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Crossac

Highlight • Historical Site

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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Wolf Stone Dolmen

Highlight • Summit

The dolmen has a large cover table (4 m in length for a width of 2.95 m and an average thickness of 0.35 m) which rests on three pillars of unequal heights of 1.60 m, 1.35 m respectively. and 1 m. A slab lying on the ground is visible inside the room1.

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Popular around Saint-Malo-De-Guersac

Road Cycling Routes around Saint-Malo-De-Guersac

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Tips from the Community

Fred
June 13, 2025, Tumulus de Dissignac

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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SimonWicart
June 3, 2023, Crossac

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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Fabien
May 20, 2023, Port de Bréca

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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Frequently Asked Questions

What kind of natural features can I expect to see around Saint-Malo-De-Guersac?

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.

Are there family-friendly natural monuments in the Saint-Malo-De-Guersac area?

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.

What is the best time of year to visit the natural monuments in Saint-Malo-De-Guersac?

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.

Can I go birdwatching at the natural sites in Saint-Malo-De-Guersac?

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.

Are there historical natural monuments to explore in the region?

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.

What outdoor activities can I do near these natural monuments?

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.

What should I wear when visiting the natural monuments, especially the marshlands?

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.

Are there any specific access requirements for the Pierre Constant Site – Brière Marsh Nature Reserve?

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.

What do visitors enjoy most about the natural monuments in Saint-Malo-De-Guersac?

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.

Where can I find panoramic views of the Brière marsh?

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.

Are there any charming villages or cultural aspects near the natural monuments?

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.

How can I get to the natural monuments near Saint-Malo-De-Guersac by public transport?

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.

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