Collonges is a commune in the Ain department in the Auvergne-Rhône-Alpes region in Eastern France. Collonges is located on the border wi…Collonges is a commune in the Ain department in the Auvergne-Rhône-Alpes region in Eastern France. Collonges is located on the border with the Haute-Savoie department, just northeast of Fort l'Écluse in Léaz, Ain. It is also situated 20 km southwest of Geneva, Switzerland.
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