Lake Geneva is divided into three parts because of its different forms of formation (sedimentation, tectonic folding, glacial erosion): According to the Swiss Federal Office of Topography, swisstopo, "Lac de Genève" designates that part of the "Petit Lac", which lies within the cantonal borders of Geneva (excluding the cantonal exclave Céligny), so about from Versoix–Hermance to the Rhône outflow in Geneva. The Chablais Alps border is its southern shore, the western Bernese Alps lie over its eastern side. The high summits of Grand Combin and Mont Blanc are visible from some places. Compagnie Générale de Navigation sur le lac Léman (CGN) operates
Geneva Public Transport Geneva Public Transport Geneva Public Transport (, TPG) operates most of the public transportation system in Geneva Canton, Switzerland, including the city of Geneva. The agency's head office is in Grand-Lancy, Lancy. The TPG operates trams, trolleybuses and buses for the Canton of Geneva and also serves some regions in neighbouring France. Local rail services are provided by the "Chemins de Fer Fédéraux" (Swiss Federal Railways) and passenger ferries across the lake by the "Mouettes Genevoises Navigation". The TPG shares a common fare system (Unireso) with these services and some in neighbouring France so that a single ticket can be