The marshes of Lavours At the foot of the mountain Colombier, this marsh is one of the last large humid areas in the region of Rhône-Alpes. Located at the extreme south of Jura, it is a notable stopping place for the migratory birds during autumn and spring. The marsh has been declared a Natural Reserve in 1984. A 3 km elevated walkway on stilts unique to Europe, allows the visitor to discover a part of this Reserve. Amis de la réserve naturelle de Lavours - Mairie de Ceyzérieu - Phone: (33)-4-79-87-90-39