



Toul-Goulic
Lanrivain
The Blavet river vanishes underground for 300 meters beneath a jumble of massive boulders, leaving only the sound of rushing water to betray its hidden path. Wander the 1.5-kilometer trail through this wooded valley and let nature's rock sculptures work their quiet magic.
Hidden river canyon
Moss-covered boulders
Forest valley walk
River disappears underground
Tips
👟wear good shoes and be careful on slippery rocks
🌤️beautiful in any weather, but stunning light on sunny days
🗺️follow the river — no formal signage but hard to get lost
Toul-Goulic
Lanrivain




The Blavet river vanishes underground for 300 meters beneath a jumble of massive boulders, leaving only the sound of rushing water to betray its hidden path. Wander the 1.5-kilometer trail through this wooded valley and let nature's rock sculptures work their quiet magic.
Hidden river canyon
Moss-covered boulders
Forest valley walk
River disappears underground
Tips
👟wear good shoes and be careful on slippery rocks
🌤️beautiful in any weather, but stunning light on sunny days
🗺️follow the river — no formal signage but hard to get lost