Canton of Geneva contains the administrative territorial entity Avully
The canton contains both the urban landscape of the city of Geneva and its surrounding towns, and a well-preserved rural landscape. The Mandement, in the north-west of the canton, is a partial valley dug by the river Allondon, a tributary of the Rhone, and regrouping the major wine-making towns of Satigny, Russin, and Dardagny. The Verbois dam built over the Rhone in that area supplies around 15% of the electricity needs of the canton and it links the Mandement to Champagne, on the opposite side of the river, between the towns of Russin and Aire-la-Ville.
Chancy, the westernmost municipality of Switzerland, is located in Champagne. The slope raises gently from the Rhone towards the main town of the region, Bernex, culminating in the Signal at 509.9 metres, the second-highest point of the canton. This region contains several historical villages such as Sézegnin, Athenaz, Avusy, Laconnex, Soral, Cartigny, and Avully, transferred to Geneva from the Duchy of Savoy in 1815.
At its narrowest point, the canton measures 2.1 km between the lake in Vegneron and the French border in Ferney-Voltaire. As this is the only territory connecting the canton towards the rest of Switzerland, this small piece of land is crossed by the main railway towards Lausanne and Neuchâtel; the A1 highway and its interchange; several roads; the international airport; two high-voltage electric lines; a gas pipeline; an oil pipeline; and a bicycle path.
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