La Roche à Sept Heures: when the Semois carves pure vertigo

You have to leave the road, park the car by the little forest clearing, then walk twenty minutes beneath the beeches. The path is steep, stony, honest. And suddenly the forest opens up, and you are standing on a rock ledge above a fifty-metre drop. Below, the Semois shines like a blade of glass, folded upon itself. This is La Roche à Sept Heures.

A river that wraps around time

The Semois, born on the high Ardennes plateau, has made a specialty of tight meanders. Where other rivers run straight, this one twists, doubles back, retraces its own steps as though checking it hasn't forgotten anything. At La Roche à Sept Heures, the strangulation is such that the loop measures barely a hundred and fifty metres around. The limestone walls, streaked with orange lichen and clusters of saxifrage, plunge almost vertically into the green water.

It is not an Alpine cirque; it is something else entirely. It is a funnel of greenery closed around a languid river. The contrast between the water's softness and the rock's violence makes your head spin. You stay there, without reaching for a phone, listening to rock martins tracing their curves along the cliff face.

The sun that drags its feet

The name says it all. At this precise spot, the sun strikes the rock no earlier than seven in the morning, sometimes much later in winter. Local elders used to tell that the sun, weary of watching the Semois go round in circles, had dozed off on the ridge and took an age to wake up. No clock was needed to tell the hour: the light, creeping in, would first illuminate the moss at the rock's foot, then the ferns, and finally the very tip. Each riverside village had its own seven hours.

September: the golden hour over the meanders

At mid-September, the light is already low, golden, slanting. The beeches on the opposite bank are beginning to turn in touches of russet, and the Semois loop stands out in tones of copper and moss. Hikers come in numbers on weekends, but on a weekday morning, when your only witnesses are the wind and the crows, you understand why the old-timers named this place rather than let its singularity go unremarked.

You descend with slightly stiff knees and short breath, carrying that persistent sensation of having stood a little too close to the edge of the world. The car restarts, the village draws nearer, and the Semois vanishes behind the treetops. But its loop stays imprinted behind your eyelids.