Vallon de la Chambre au Loup, Nature reserve in Iffendic, France.
The Vallon de la Chambre au Loup is a valley featuring steep rocky walls that rise about 35 meters and surrounding wooded heathland spread across 70 hectares. A twisting stream flows through the landscape, creating natural divisions between the different sections of this terrain.
The valley formed through ground collapse that began when cracks opened in the underlying schist rock layers below the surface. A stream running through the area gradually deepened these initial splits, slowly carving out the landscape over time.
The name comes from old wolf stories that local people shared across generations, connecting to ancient Celtic legends of the region. These tales still shape how visitors and residents think about this place today.
This location sits along the GR37 hiking route, part of the Tour de Brocelia trail system, offering marked walking paths through the terrain. Lake Tremelin is just a few kilometers away and provides parking and basic visitor facilities nearby.
The rock walls are made of purple schist, an uncommon stone that glows distinctly under autumn and winter sunlight in striking ways. Seasonal blooms of golden gorse, violet heather, and bronze lichen across the rocks create a changing palette of colors throughout the year.
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