The Leysse is the river which crosses the city of Chambéry, Savoie, France. At its entrance into the city, it goes underground in a channel of about one kilometer.
Wikipedia https://en.wikipedia.org/wiki/Leysse
Address 195 Chemin du Petit Bois, Chambéry 73000, France
Coordinates 45°35'56.82" N 5°54'29.109" E