Natural monuments around Plélan-Le-Grand are concentrated in a region of Brittany, France, situated at the edge of the expansive Brocéliande Forest. This area is characterized by its diverse landscapes, including ancient woodlands, moors, and numerous ponds, many of which are steeped in Arthurian legends. The natural features provide a setting for various outdoor activities, including hiking trails and walking routes, offering a blend of natural beauty and historical significance.
Last updated: May 23, 2026
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Added to the collection: komoot.com/de-de/collection/3600632/-naturdenkmaeler-besondere-baeume-und-weitere-schaetze-der-natur
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Very beautiful view, excellent spot for a break or a picnic
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This oak, listed as a “remarkable tree,” is three to four centuries old. It owes its name to the abbot of the same name who took refuge there in 1791 for several years.
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Merlin's spirit blows over the site
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Lost in the lower Brocéliande forest (on the edge of the Paimpont national forest), between the Château de Comper and the Tombeau de Merlin, the Pont Dom Jean pond is a superb body of water, a calm and peaceful place, far from the roads... (broceliande.guide)
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L'étang du Pont Dom Jean is a beautiful body of water and a calm and peaceful place. It is located in the Brocéliande between the castle of Comper and the tomb of Merlin.
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With nearly ten meters in circumference, the Guillotin oak is the largest among the country's remarkable trees. Legend has it that a refractory priest named Guillotin hid there during the Revolution. On site, a panel further details the history of the tree.
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The most popular natural monuments in the area include the legendary Barenton Fountain, nestled deep within the Paimpont forest, and the tranquil Pont Dom Jean Pond, a peaceful spot between the Château de Comper and Merlin's Tomb. Another highly regarded site is the ancient Guillotin Oak, a remarkable tree with a circumference of nearly 10 meters, steeped in local legends.
Yes, several natural monuments are suitable for families. The Guillotin Oak and the Pont Dom Jean Pond offer easy access and pleasant surroundings for all ages. Additionally, the Large beech in the Paimpont forest is another accessible natural feature. Lac de Trémelin, while not a specific highlight in the guide, is also known for its family-friendly activities like swimming and pedal boating during summer.
The region offers a variety of outdoor activities. The vast Forêt de Brocéliande features nearly 200 signposted routes perfect for hiking, cycling, and horseback riding. For specific routes, you can explore options like running trails, cycling routes, and gravel biking adventures around Plélan-Le-Grand.
You can expect to encounter diverse natural features, primarily within the expansive Forêt de Brocéliande. This includes ancient woodlands, serene ponds like Pont Dom Jean Pond, heathlands, and unique geological formations such as The Dragon's Ridge. The area is also home to remarkable individual trees like the Guillotin Oak and the Large beech in the Paimpont forest.
Absolutely. The entire Forêt de Brocéliande is steeped in Arthurian legends. The Barenton Fountain is famously where Merlin is said to have met the fairy Viviane. The Guillotin Oak also has its own local legend, named after a priest who reportedly hid there during the Revolution.
The best time to visit is generally from spring to autumn (April to October) when the weather is mild and the natural landscapes are vibrant. Spring brings lush greenery and blooming flora, while autumn offers stunning fall colors in the forests. Summer is ideal for water activities at Lac de Trémelin, though it can be busier.
Yes, The Dragon's Ridge is a notable viewpoint, offering magnificent perspectives over the Brocéliande forest from its rocky band at 240m altitude. The Pont Dom Jean Pond also provides beautiful, serene views.
Many trails and natural areas within the Forêt de Brocéliande are dog-friendly, especially if kept on a leash. Specific rules may apply to certain protected areas or facilities, so it's always best to check local signage. Generally, the forest paths and pond surroundings are welcoming for dogs.
The Forêt de Brocéliande is home to a variety of wildlife. You might spot deer, roebuck, squirrels, and hedgehogs. The region is also rich in bird species. Lac de Trémelin and the preserved wetlands around Plélan-Le-Grand are particularly good for birdwatching and observing local ecosystems.
Beyond the well-known sites, the region is dotted with numerous smaller ponds like those of Trégu, Trécouët, Perray, and Forges, which offer peaceful settings for walks and picnics. The preserved wetlands (Jardins d'agrément) within Plélan-Le-Grand itself are also unique, showcasing local biodiversity and eco-friendly land management.
The duration of your visit can vary greatly. You could spend a few hours exploring a single site like the Barenton Fountain or the Guillotin Oak. To fully immerse yourself in the Forêt de Brocéliande and visit multiple sites, including hiking or cycling, you could easily spend a full day or even several days.


Extend your search for the best caves by checking out these guides of the top ones around Plélan-Le-Grand: