Best natural monuments around Ploufragan include ancient megalithic structures and diverse natural landscapes. This commune in Brittany, France, features a rich history evident in its Neolithic sites and offers varied natural features. The region is characterized by its coastal proximity, river valleys, and significant natural reserves. These sites provide opportunities to explore both prehistoric heritage and natural environments.
Last updated: June 20, 2026
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Our starting point. The house was unfortunately closed.
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Difficulty finding the start of the hike, so we chose the bay house.
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The rocky promontory in front of you is a place charged with emotion. Indeed, it is from there that the women of the area came to greet the men who were leaving or returning from the "Great Fishing", that is to say the cod fishing that was done in Newfoundland and then in Iceland. The fishing campaigns lasted 6 to 8 months. Imagine all the women who were there, standing, coming to say a last "hello" to their loved ones (husband, brother, friend), fearing they would never see them again. Or conversely, imagine them filled with joy at the idea of seeing them again when they saw the boat return to port. Photo credit: Emmanuel Berthier
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Today, La Grève des Courses is part of the GR34, a coastal hiking trail that allows you to discover all of Brittany’s coasts. From here, you can enjoy magnificent views of the Anse d’Yffiniac. The area is also home to mussel farms, known as “bouchots”, which are a local specialty. The Réserve Naturelle de La Baie de Saint-Brieuc itself is the largest nature reserve in Brittany.
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In the 19th and 20th centuries, La Grève des Courses was a festive place where horse races and aviation meetings took place. However, it later became a wild dump where waste was thrown directly onto the sand, polluting the bay. Thanks to the efforts of environmental associations, it was transformed into a nature reserve.
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The site is exceptional because it is located in the Nature Reserve which is home to a very varied fauna and flora. It can accommodate up to 40,000 migratory birds in winter. The site is also remarkable because it is located in the heart of the bay of Saint-Brieuc, the fifth bay in the world for the amplitude of its tides. The sea can recede more than 7 km! It is this natural heritage that the Maison de la Baie, classified as Maison Nature, lets you discover through its museum, its temporary exhibitions, its educational activities, its walks and its nature outings. Actions that show the richness of biodiversity, raise awareness of environmental protection and develop eco-citizen behavior. https://www.saintbrieuc-armor-agglo.bzh/sortir-et-decouvert/proteger-notre-environnement/preservation-de-la-baie/la-maison-de-la-baie
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Wild and secret, the Yffiniac cove is the most advanced part of the land of the Bay of Saint-Brieuc. Located in the heart of the largest Nature Reserve in Brittany, it can be discovered along the Chemin des Grêves.
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This impressive Neolithic menhir has been knocked down and stands tall. It is 5.9 meters long.
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Ploufragan is rich in ancient history, featuring several megalithic structures dating back to the Neolithic period. These include three allées couvertes (covered walkways) and two menhirs. Notable sites are the Allée couverte de la Vallée, Allée couverte de la Couette, and Allée couverte du Grand Argantel, which served as collective tombs. You can also see the Menhir du Sabot and Menhir de la Vallée. These monuments offer a unique glimpse into the region's 5,000-year-old past.
Yes, the Plan d'eau du Pont-Noir is an artificial lake just 3 km from Saint-Brieuc, ideal for nature lovers. It's a retention basin on the Gouët river, offering a serene environment for water sports, fishing, hiking, and jogging. It's a great spot for recreation amidst natural scenery.
The Saint-Brieuc Bay Nature Reserve is an excellent place for wildlife observation. As the second largest natural park in Brittany, it hosts around 35,000 bird species annually. The Vallée du Goëlo in Ploufragan is also recognized as an LPO (Ligue pour la Protection des Oiseaux) refuge, providing opportunities for scenic walks and wildlife spotting.
You'll encounter a diverse range of landscapes. The Saint-Brieuc Bay Nature Reserve features eclectic landscapes including salt meadows, dunes, and lagoon waters. The Chaos du Gouët Trail offers magical scenes along the Gouët river with mossy rocks and forest. Additionally, you'll find ancient megalithic sites nestled within the commune's green spaces.
Absolutely. The Vallée du Goëlo in Ploufragan has developed hiking trails that crisscross the commune. For more structured routes, you can explore options like the Saint-Barthélémy Dam – Pont Noir South Section loop. You can find more hiking routes in the Hiking around Ploufragan guide.
There are various cycling opportunities. For road cycling, routes like the Viaduc du Parfond de Gouët – Gouët Viaduct loop are popular. If you prefer gravel biking, you can find challenging routes such as the Douvenant Viaduct – Ponts-Neufs Viaduct loop. Explore more options in the Road Cycling Routes around Ploufragan and Gravel biking around Ploufragan guides.
Many natural sites around Ploufragan are family-friendly. The Saint-Brieuc Bay Nature Reserve and La Grève des Courses are noted as suitable for families, offering easy walks and opportunities for bird watching. The Plan d'eau du Pont-Noir also provides a safe environment for various outdoor activities for all ages.
The best time to visit depends on your interests. For birdwatching, winter is ideal at the Saint-Brieuc Bay Nature Reserve, as it hosts up to 40,000 migratory birds. Spring and autumn offer pleasant temperatures for hiking and exploring the megalithic sites and the Vallée du Goëlo. Summer is great for water activities at the Plan d'eau du Pont-Noir.
Visitors frequently praise the preserved natural spaces and the rich biodiversity. The Saint-Brieuc Bay Nature Reserve is highly appreciated for its varied landscapes and abundant birdlife. The Chaos du Gouët Trail is loved for its 'magical landscapes' along the river, offering a peaceful and scenic walk. The ancient megalithic sites are valued for their historical significance and the connection to prehistoric cultures.
For stunning panoramic views, head to the Rocher du Coucou, a rocky promontory with historical significance. The Saint-Brieuc Bay Visitor Centre also offers a beautiful viewpoint over the bay. Additionally, La Grève des Courses provides magnificent views of the Anse d’Yffiniac.
Beyond the prominent sites, the alignment of the megalithic structures themselves, spaced 400 to 500 meters apart, is considered quite rare and offers a unique historical perspective. The Vallée du Goëlo, while developed for walks, also serves as an LPO refuge, making it a quiet spot for observing local flora and fauna away from larger crowds.


Extend your search for the best caves by checking out these guides of the top ones around Ploufragan: