Cascade du Nant Debout or cascade de la Balme de Thuy is a nice waterfall in springtime. Cascade du Nant Debout is located east of La Balme de Thuy (not far from Lac d’Annecy) in the Haute Savoie, France.
From Annecy take road D909 to la Balme de Thuy/Thones. In Thuy Dessous turn left onto the D216. After 600 meters Cascade du Nant Debout shows up at the right side of the road.
From the roadside you will only see the lower part of the Cascade du Nant Debout, but there is a trail, starting at Auberge de Morette, that goes to the upper part of the waterfall.
Best visit the Cascade du Nant Debout in springtime when there is more water in the river Nant Debout. We visited the waterfall once when staying at lac d’Annecy in May years ago.