23 km from the campsite, it is the southern part of the Jura mountains. It is a vast plateau of hills, pastures, forests, paths and villages. In winter it is a large Nordic area, and in summer the ski slopes are used by hikers.
You will find many hiking trails.
More information: https: //bugeysud-tourisme.fr/fr/decouvertes/nature/le-plateau-de-retord/