Le Val sans Retour

The Val sans Retour lies on the edge of the Paimpont forest, near Tréhorenteuc, in a landscape of wooded slopes, heathland, ponds and exposed reddish rock. The valley forms part of the larger Paimpont-Brocéliande forest and is particularly notable for its geological formations: the red schists visible along the valley belong to the Ordovician Formation de Pont-Réan. The landscape also contains several landmarks associated with Arthurian tradition, including the Miroir aux Fées, the Rocher des Faux Amants, the Siège de Merlin and the Hôtié de Viviane.

 

The Val sans Retour is a natural and geological site covering several dozen hectares, with steep wooded slopes, ponds, heathland and exposed red schist formations. The rocks belong to the Ordovician Formation de Pont-Réan and provide an opportunity to observe both sedimentary layers and the effects of later tectonic deformation. The site is listed in the National Inventory of Geological Heritage.

The valley is also one of the main visitor areas of the Brocéliande forest. Walking trails connect several of its best-known landmarks, including the Miroir aux Fées, the Rocher des Faux Amants, the Siège de Merlin and the Arbre d’Or. The latter was created in 1991 by artist François Davin after a major forest fire in 1990. Its gilded trunk, surrounded by five blackened trees, commemorates the fire and the subsequent regeneration of the forest.

 

The Val sans Retour is one of Brocéliande’s most legendary spots, and several overlapping stories are now attached to the valley and its landmarks. The core tale comes from 13th‑century Arthurian romance: the fairy Morgane creates an enchanted valley (the Val des faux amants or Val sans retour) to trap knights who have been unfaithful to their lovers; Lancelot, faithful to Guinevere, breaks the spell and frees them. Originally a literary invention, this valley was identified with the present landscape near Tréhorenteuc from the 19th century onwards, and the local scenery has since been interpreted through this story.

Local folklore adds colour to specific sites. On the ridges above the valley, the Rocher des Faux Amants is said to be the petrified bodies of Morgane’s lover (often named Guyomarc’h/Guiomar) and his beloved, turned to stone in the fairy’s rage; the same anger is said to have cast the spell that traps unfaithful lovers in the valley. The nearby Miroir aux Fées pond is linked to a tale of seven fairy sisters who used the still water as a mirror; in one version, the red colour of the surrounding ground is explained as the blood of fairies killed by their younger sister after a dispute over love, a folk explanation for the red schist landscape. The Siège de Merlin is presented as a rock seat associated with Merlin’s presence in the valley, while the Hôtié de Viviane (a Neolithic burial chamber above the valley) is traditionally described as Viviane’s “house”, where she held Merlin enchanted in a prison of air.

 

The main access to the Val sans Retour is from the village of Tréhorenteuc. The official Circuit du Val sans Retour begins in the village and follows a marked walking route through the valley, passing the Arbre d’Or, Miroir aux Fées, Rocher des Faux Amants and Siège de Merlin. The complete circuit is approximately 8 kilometres and takes about 2 hours 40 minutes; it is classified as a moderately difficult walk.

The terrain includes forest paths, rocky sections, slopes and changes in elevation. The ascent towards the viewpoints can be demanding, and some sections require care, particularly on uneven or wet ground. Visitors should check the Destination Brocéliande website for current information on seasonal closures, access restrictions and trail conditions before visiting. 

There is no admission fee for visiting the natural site, and no guide is required for the standard walking circuit. Guided and storytelling walks are also organised in the area. Visitors should remain on designated paths, respect the protected natural environment and follow temporary access restrictions