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Saint-Aubin-Des-Bois

Top 5 Natural Monuments around Saint-Aubin-Des-Bois

Best natural monuments around Saint-Aubin-Des-Bois offer a range of natural landscapes across its various communes. The region features significant lakes, extensive forests, and unique geological formations. These sites provide opportunities for hiking, birdwatching, and observing diverse flora and fauna. Exploring these natural monuments offers insight into the area's ecological and geological heritage.

Best natural monuments around Saint-Aubin-Des-Bois

  • The most popular natural monuments is Lac du Gast, a lake that serves as a drinking water reserve covering 66 hectares. It…

Last updated: May 21, 2026

Lac du Gast

Highlight • Lake

This drinking water reserve, located 2 km from the source of the Sienne, covers 66 hectares. About 16,000 m3 of water are withdrawn every day to meet the demand for drinking water.

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Hameau Les Nouettes

Highlight • Natural

There, the meadows are dotted with granite balls called "oxen". Large granite blocks with rounded shapes outcrop there. They result from the weathering of the granite into balls under the action of infiltration water.

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Ornithological Reserve

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the ornithological reserve of 4 hectares is of remarkable interest thanks to many species nesting in the wetlands: great crested grebe, little grebe, mallard duck, coot, lesser plover or even …

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Étang de Coulanges

Highlight • Lake

Well hidden in the forest of Saint-Sever, between the Tranchée de la Garde Bourgeoise and the
Vissière forest road, the Coulanges pond is only accessible on foot or by mountain …

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Granite Route

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Today, only one quarry still extracts the “Bleu de Vire” granite. It is used to produce cobblestones for pedestrian areas in cities, tombstones for funerary monuments and for high technology …

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Popular around Saint-Aubin-Des-Bois

Hiking around Saint-Aubin-Des-Bois

Cycling around Saint-Aubin-Des-Bois

Road Cycling Routes around Saint-Aubin-Des-Bois

MTB Trails around Saint-Aubin-Des-Bois

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Gravel biking around Saint-Aubin-Des-Bois

Tips from the Community

Louis Werner 🦅
October 3, 2023, Lac du Gast

Super cool for a break

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Binoculars are recommended

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Great habitat for waterfowl. Binoculars are worth it!

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JMTVTT
November 21, 2022, Lac du Gast

we really liked this passage in osmosis with nature, trees, rock, really beautiful....👏😉👍

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There, the meadows are dotted with granite balls called "oxen". Large granite blocks with rounded shapes outcrop there. They result from the weathering of the granite into balls under the action of infiltration water.

Translated by Google

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Today, only one quarry still extracts the “Bleu de Vire” granite. It is used to produce cobblestones for pedestrian areas in cities, tombstones for funerary monuments and for high technology (space conquest, robotics). Hikers will encounter pierced granite stones along this route.

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Well hidden in the forest of Saint-Sever, between the Tranchée de la Garde Bourgeoise and the Vissière forest road, the Coulanges pond is only accessible on foot or by mountain bike. If fishing is prohibited there, a dike makes it possible to retain the water and to obtain a beautiful view of the body of water. A forest shelter and a picnic area have been set up to take advantage of this haven of peace.

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the ornithological reserve of 4 hectares is of remarkable interest thanks to many species nesting in the wetlands: great crested grebe, little grebe, mallard duck, coot, lesser plover or even the reed bunting. Three observatories have been installed on the edge of the lake to better admire these birds without disturbing them.

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Frequently Asked Questions

What are the most popular natural monuments to visit around Saint-Aubin-Des-Bois?

Among the most appreciated natural monuments are Lac du Gast, a significant drinking water reserve and waterfowl habitat, and the adjacent Ornithological Reserve, known for its diverse birdlife and observation points. Visitors also enjoy Hameau Les Nouettes, where unique granite formations called 'oxen' dot the meadows.

Are there family-friendly natural monuments in the Saint-Aubin-Des-Bois area?

Yes, several natural monuments are suitable for families. Lac du Gast and its Ornithological Reserve are great for nature walks and birdwatching, with observatories for easy viewing. Hameau Les Nouettes offers an interesting geological feature with its 'oxen' granite balls, which can be a fun discovery for children. The Lac du Gast also features educational trails and a conservatory orchard.

What kind of wildlife can I observe at the natural monuments?

The region is particularly rich in birdlife, especially around Lac du Gast and the Ornithological Reserve. Here, you can spot great crested grebes, little grebes, mallards, coots, little ringed plovers, and reed buntings, especially during wintering. The extensive forests like Saint-Sever State Forest and Bois de Rumignon also provide habitats for diverse flora and fauna, including various bat species.

Are there good hiking trails near the natural monuments?

Absolutely. The Saint-Sever State Forest, where Étang de Coulanges is located, offers numerous opportunities for hiking. The Bois de Rumignon, near Saint-Aubin-du-Cormier, is crossed by the GR37 hiking path. You can also explore the Granite Route, which is an intermediate trail featuring unique pierced granite stones. For more options, check out the hiking routes around Saint-Aubin-Des-Bois.

What unique geological features can be found in the area?

One notable geological feature is found at Hameau Les Nouettes, where meadows are dotted with large, rounded granite blocks called 'oxen.' These formations are a result of granite weathering. Additionally, the Granite Route showcases pierced granite stones and highlights the region's history with 'Bleu de Vire' granite extraction.

Can I go cycling near the natural monuments?

Yes, the region offers various cycling opportunities. While Étang de Coulanges is accessible by mountain bike, you can find numerous routes for gravel biking, road cycling, and touring cycling. Explore options like the 'Former Railway Embankment – Along the Vire loop' or the 'Saint-Sever Granite Country Loop'. For detailed routes, refer to the Gravel biking around Saint-Aubin-Des-Bois, Road Cycling Routes around Saint-Aubin-Des-Bois, and Cycling around Saint-Aubin-Des-Bois guides.

What is the best time of year to visit the natural monuments?

The natural monuments are enjoyable throughout the year, but spring and autumn often offer pleasant weather for hiking and birdwatching, with vibrant foliage or blooming flora. Winter can be excellent for observing waterfowl at Lac du Gast and the Ornithological Reserve. Always check local weather conditions before your visit.

Are there any historical or cultural sites integrated with the natural landscapes?

Yes, the Granite Route is not only a natural trail but also a historical site, showcasing the region's granite extraction heritage. In Saint-Aubin-des-Châteaux, the Menhir des Louères, a standing stone from the Neolithic era, is a historical monument set within the natural landscape. The Château Park and Medieval Garden in Saint-Aubin-du-Cormier also blend historical context with natural beauty.

Where can I find a peaceful spot for a picnic near the natural monuments?

The Étang de Coulanges, hidden within the Saint-Sever forest, offers a forest shelter and a dedicated picnic area, making it an ideal tranquil spot. The area around Lac du Gast also provides pleasant settings for a relaxing break amidst nature.

What do visitors particularly enjoy about the natural monuments around Saint-Aubin-Des-Bois?

Visitors frequently highlight the sense of being 'in osmosis with nature' and the beautiful scenery, especially around the lakes and forests. The opportunity for birdwatching at the Ornithological Reserve is highly praised, with many recommending binoculars. The unique geological formations like the 'oxen' at Hameau Les Nouettes also capture interest.

Are there any specific natural areas classified for their ecological importance?

Yes, the Bois de Rumignon, near Saint-Aubin-du-Cormier, has a portion classified as a 'Sensitive Natural Area' (Espace Naturel Sensible), recognizing its ecological value. The Ornithological Reserve at Lac du Gast is also a 4-hectare reserve of remarkable interest for its wetland species.

Are there any 'remarkable trees' in the vicinity of Saint-Aubin-Des-Bois?

In the commune of Saint-Aubin-du-Cormier, three trees are listed under the 'Remarkable Trees in Brittany' operation, with two of them located in public spaces. These trees are recognized for their ecological or aesthetic significance and are worth seeking out for their unique presence in the landscape.

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Extend your search for the best caves by checking out these guides of the top ones around Saint-Aubin-Des-Bois:

Vire-NormandieSouleuvre-En-BocageLe GastFontenermontMesnil-ClinchampsLe Mesnil-CaussoisSept-FrèresSaint-Sever-CalvadosCoursonSaint-Manvieu-BocageChamp-Du-BoultCondé-En-NormandieLe Mesnil-BenoistLandelles-Et-Coupigny

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