Les marais de Chirens
You will find yourself at the bottom of the ancient lake of Chirens which, after the ice melted around 15 000 years ago, was filled with sediment and peat to become a marsh. Beautiful views over the ancient glacial valley of the Val d'Ainan.
These marshes today extend over 380 hectares between the foothills of Chartreuse and Lake Paladru.
Wet meadows, reedbeds, pastures, cereal fields, and woodlands… It's a mosaic of habitats with great floral diversity. A rich variety of plants thrive on the site, including orchids and species specific to wetlands such as willows and reeds. The Dragonfly Trail, created by the Department, offers a way to discover them.
Take advantage of your visit to Chirens to visit the Benedictine Priory of Chirens and its remarkable XNUMXth century Romanesque apse.
Pedestrian map of the Pays Voironnais at 1/25000 (on sale at 5 € in the reception offices of Voiron and Lac de Paladru)
Mother Nature thanks you for taking your rubbish home with you, she doesn't digest it well!
Respect crops and private property by staying on marked trails.
Step-by-step guide
Route stages with the names of the signposts to follow:
– Chirens
– Beaudiné
Update May 2022: Roadworks are currently blocking the route between Beaudiné and Jolis. You must continue to the roundabout, turn right, and you will arrive at Le Prieuré. At the Le Prieuré signpost, follow the Gayet road, then Les Jolis.
– The Pretty Ones
– The Brushes
– Le Ruibet
– La Garangère
– La Courriaz
– Clermont
– The Reviriaz
– The Arsenal
– Antwerp
– Beaudiné
– Chirens
Alert
Road crossing (D1075)
Sections of road without a shoulder (50m at Gayet and 400m on the D82 before the Arsenal)