Clarafond-Arcine

Léaz (French pronunciation: [le.a]; Arpitan: Lèya) is a commune in the Ain department in eastern France. In addition to the main village, the commune has three hamlets: Grésin, Lavoux and Longeray.

Éloise (French pronunciation: [elwaz]; Arpitan: Élouéze) is a commune in the Haute-Savoie department in the Auvergne-Rhône-Alpes region in south-eastern France.

The Vuache is a range of hills in eastern France, close to the border with Switzerland (the nearest city is in fact Geneva). To the north lies the Jura and to the south the Alps. At their northern end, the hills drop steeply down to the River Rhône. The Vuache Tunnel, carrying the A40 Geneva to Lyon motorway, cuts through the hills. The oak woodlands along the northwest edge of the Vuache support very high densities of western Bonelli's warblers, and Eurasian eagle owl nest on the cliffs here.

Chevrier is a commune in the Haute-Savoie department in the Auvergne-Rhône-Alpes region in south-eastern France.

Vulbens (French pronunciation: [vylbɛ̃s]; Arpitan: Vulbin) is a commune in the Haute-Savoie department in the Auvergne-Rhône-Alpes region in south-eastern France. Vulbens is located 20 kilometres southwest of Geneva, on the hills of the Vuache. Vulbens has a border with Switzerland, the commune of Chancy. Other neighbouring municipalities are Chevrier, Pougny, Valleiry, Viry and Dingy-en-Vuache.

Fort l'Écluse, or the Fort de l'Écluse, is a military fort in Léaz, Ain, close to Collonges in Eastern France. It commands the Rhône Valley as a natural entrance into France from Switzerland between the Vuache and the Jura Mountains. The fort, which was established by a Duke of Savoy, was completed by Sébastien Le Prestre de Vauban during the reign of King Louis XIV. It was destroyed by the Austrians in 1815, but rebuilt by the French; at the same time it was considerably strengthened and heightened. The high-road intersects a portion of this fortification.

Dingy-en-Vuache (French pronunciation: [dɛ̃ʒi ɑ̃ vɥaʃ]; Arpitan: Dinzhi) is a commune in the Haute-Savoie department in the Auvergne-Rhône-Alpes region in south-eastern France.

Savigny (French pronunciation: [saviɲi] ; Arpitan: Savnyi) is a commune in the Haute-Savoie department in the Auvergne-Rhône-Alpes region in south-eastern France.

The Perte du Rhône (Loss of the Rhône) is a sixty-metre-deep geologic fault just upstream of Bellegarde-sur-Valserine in France, into which the Rhône River used to disappear during the dry season. It marked the border between Ain and Haute-Savoie. In 1948, the Génissiat Dam, designed by French architects Albert Laprade and Léon Bazin, was built to the south of Bellegarde. With the construction of the dam, the Perte du Rhône was transformed into a reservoir twenty three kilometres long, from Génissiat to the Swiss border. A similar feature called Pertes de la Valserine still exists in the same area.In 1854, Eugène Renevier, Professor of Geology and Paleontology at the University of Lausanne, wrote Fossiles du terrain aptien de la Perte-du-Rhône with François Jules Pictet de la Rive.

The canton of Collonges is a former administrative division in eastern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It had 11,647 inhabitants (2012).The canton comprised 10 communes:

Collonges (French pronunciation: [kɔlɔ̃ʒ]; Arpitan: Colonges) 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 (12.4 mi) southwest of Geneva, Switzerland.

Musièges (French pronunciation: [myzjɛʒ]; Arpitan: Mozêzho) is a commune in the Haute-Savoie department in the Auvergne-Rhône-Alpes region in south-eastern France.