The Varenne doesn't announce itself. From the old town on its granite spur, you'd barely know there was a river below — until you descend the slope and suddenly the trees close in, the air cools, and the gorge opens around you. It is one of the town's best-kept secrets, and one of its most rewarding short walks.
01Into the Gorge
The Varenne cuts through ancient Armorican granite — the same rock that the castle builders quarried for their ramparts and that still shoulders the medieval town overhead. In the gorge, that geology is on full display: mossy boulders, exposed grey outcrops, and clear water running fast over a stony bed. The woodland here is dense and deciduous, all oak and hazel with fern-covered banks, a genuine bocage river corridor that feels wilder than its proximity to the town centre might suggest.
The most accessible entry point is near Notre-Dame-sur-l'Eau, the Romanesque church that sits beside the river at the foot of the hill — itself worth several minutes of quiet attention before you walk on. From there, footpaths follow the river downstream through the gorge. The going is easy for the most part, though sections can be muddy after rain; boots are a good idea in any season.
It is the kind of walk that rewards slowness: a heron lifting from a pool, the sound of water over stone, the way the late-afternoon light drops through the canopy in long slanted shafts. In spring, the banks are lively with wildflowers; in autumn, the gorge burns orange and copper, arguably its finest hour.
02What to Bring Back
Distance-wise, the gorge walk needn't take more than an hour or two at an unhurried pace — though there is nothing wrong with turning around when it feels right.
There are no cafés or facilities along the path, so bring water and something to eat. And, almost certainly, a camera: the river bends, the stone, the church reflected in still water on the way back — these are not things that need a filter.