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France
Manche
Avranches
Saint-Georges-De-Rouelley

Fosse Arthour Loop

Moderate

4.5

(13)

53

hikers

Fosse Arthour Loop

02:21

8.64km

130m

Hiking

Hike the moderate 5.4-mile La Fosse Arthour loop in Parc Naturel Régional et Géoparc Normandie-Maine, featuring a gorge, waterfall, and pano

Last updated: February 26, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Parc naturel régional et Géoparc Normandie-Maine

Waypoints

A

Start point

Parking

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1

3.63 km

Fosse Arthour

Highlight • Gorge

70 meters deep, this gorge has many attractions. On the heights, you will find a superb panorama as well as a Calvary marking the highest point of the ridge. In …

Translated by Google •

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2

4.50 km

Gué Saffray quarry

Highlight • Other

Dug into the rock bar separating Mortain and Domfront, this former quarry offers beautiful landscapes. Below, the view mixes rock and vegetation. The small path that leads to the top …

Translated by Google •

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8.64 km

End point

Parking

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Way Types & Surfaces

Way Types

4.74 km

1.91 km

1.77 km

199 m

Surfaces

4.74 km

2.11 km

1.75 km

< 100 m

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Elevation

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Highest point (220 m)

Lowest point (150 m)

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Weather

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Thursday 14 May

13°C

3°C

58 %

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Max wind speed: 20.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

What kind of terrain and scenery can I expect on the La Fosse Arthour loop?

The trail traverses a dramatic geological fault, forming a narrow, 70-meter deep gorge carved through a rocky ridge. You'll encounter large rock blocks, the Sonce river, a waterfall, and an artificial pond. From the heights of the gorge, enjoy superb panoramic views, including a Calvary marking the highest point. The landscape is a rich mosaic of natural environments, featuring woodland, moorland, scree, and peat bogs.

Is the La Fosse Arthour loop suitable for beginners or families?

Yes, the trail is generally considered a moderate hike, but it features easily-accessible paths suitable for most skill levels. While it requires good fitness, its diverse terrain and manageable length make it enjoyable for families and those new to hiking. The komoot tour is 8.6 km long with 130m of elevation gain.

What are the main points of interest along the La Fosse Arthour trail?

Beyond the stunning gorge itself, key points of interest include the legendary Fosse Arthour, with its caves said to be King Arthur and Queen Guinevere's chambers. You'll also pass the Gué Saffray quarry, a waterfall, a natural basin rumored to be bottomless, and a Calvary offering panoramic views from the ridge. There's also an inn on-site for refreshments.

Where can I park to access the La Fosse Arthour trail?

Specific parking information is not detailed in the provided sources, but given its popularity, there is likely designated parking near the trailhead. It's advisable to check local signage or online maps for the most convenient parking areas when planning your visit to the La Fosse Arthour loop.

What is the best time of year to hike the La Fosse Arthour loop?

The trail can be enjoyed year-round, but spring and autumn offer particularly pleasant conditions with mild temperatures and vibrant foliage. Summer is also popular, though it can be warmer. Winter hikes are possible, but be mindful of potentially slippery conditions, especially in the gorge.

Is the La Fosse Arthour loop dog-friendly?

While the sources don't explicitly state dog-friendliness, many trails in regional natural parks in France allow dogs on a leash. Given the diverse terrain and potential for wildlife, it's recommended to keep dogs on a leash at all times to ensure their safety and respect for the natural environment. Always check local regulations before you go.

Do I need a permit or pay an entrance fee to hike in the Parc Naturel Régional et Géoparc Normandie-Maine?

Generally, access to trails within French Regional Natural Parks, including the Parc Naturel Régional et Géoparc Normandie-Maine, is free and does not require a permit. However, always respect local regulations, especially concerning protected areas, and be mindful of any specific rules posted at the trailhead.

Does the La Fosse Arthour loop intersect with other well-known paths?

Yes, the route also passes through sections of the de Bagnoles-de-l'Orne à Saint-Pois, Chemin des Arpents, Chemin de la Carrière, Chemin de Guenièvre, Chemin de la Poterie, and Chemin des Gîtes.

Are there any facilities or places to eat near the trail?

Yes, there is an inn located on-site at La Fosse Arthour, offering a convenient place to rest and eat after your hike. For more options, nearby towns within the Parc Naturel Régional et Géoparc Normandie-Maine would provide additional restaurants and accommodations.

What is the legend behind La Fosse Arthour?

The site is steeped in the legend of King Arthur. Two caves within the rocks are said to be the chambers of King Arthur and Queen Guinevere. Local lore suggests they lived separately, only meeting after sunset. One tragic tale recounts Arthur's impatience leading to his fall into the ravine, followed by Guinevere throwing herself in. The Sonce river's natural basin at the gorge's base is also said to be bottomless and possess magical properties granted by King Arthur.

What should I pack for hiking the La Fosse Arthour loop?

Given the moderate difficulty and varied terrain, it's advisable to wear sturdy hiking shoes. Bring water, snacks, and appropriate clothing layers for changing weather conditions. A camera is recommended for the panoramic views and unique geological features. If you plan to explore the caves or rocky areas, a headlamp might be useful.

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Trail Reviews

Viola
August 14, 2023, La Fosse Arthour — boucle dans le parc naturel régional et Géoparc Normandie-Maine

70m below me lies the gorge that the Sonce dug in the rocks. Arthour and Guinevere are said to have fallen down here "anno dunnemal". That's why the gorge got its name.

Translated by Google

The last section is not very passable, due to tree felling... Forestry equipment holes

Translated by Google
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