1,844 protected hectares (4,566 acres) starting from the banks of the Rhône up to the thickets of the Combe d'Enfer, and from the remains of the former town of Léaz as far as Fort l'Ecluse - a ramble steeped in history.
Many hiking trails start from Fort l'Ecluse.
Free.
Office de Tourisme du Pays de Gex - 10/08/2026
www.paysdegex-montsjura.com
Report a problem
Free access all year depending on the weather.
Phone : 04 50 48 23 01
Email : mairie@leaz.fr
Website : http://www.leaz.fr
R.N. 206
In two départements: Ain and Haute-Savoie.
Parking directly at Fort l'Ecluse.