Finhaut is a municipality in the French-speaking part of the Valais region. It is located in the upper Trient Valley, named after the river of the same name. Four mountain peaks (2674 to 2838 m above sea level) form the border with France to the west and enclose a valley. The Lac du Vieux Emosson is dammed up here. It forms the upper basin and the Lac d'Emosson reservoir forms the lower basin 300 m lower down at 1930 m above sea level. On the path to the Col des Corbeaux at 2400 m above sea level, you can see well-preserved footprints of archosaurs. Three small railroads provide access to the hiking area around the reservoirs.