Cascade du Pain de sucre, Natural waterfall in Champagne-en-Valromey, France.

The cascade du Pain de sucre is a waterfall at Poisieu, in Champagne-en-Valromey, Ain. Fed by the Brize, it falls at the back of a natural limestone cirque onto a crescent-shaped tufa, then ends in a deep circular basin. Its name comes from the conical limestone concretion, the "Pain de sucre", over which the water drops.

The waterfall is fed by the Brize, which descends into a natural limestone cirque at Poisieu, in Champagne-en-Valromey (Ain). The stream pours onto a crescent-shaped tufa, a limestone deposit built up by the water itself, then falls into a deep circular basin. The conical limestone cone that gives the site its name stands beneath the falling water.

The waterfall takes its name from the conical limestone concretion, the "Pain de sucre", over which the water falls. A scene from Philippe Ramos's 2015 film Fou d'amour was shot at the site.

The falls sit at the back of a natural limestone cirque in Poisieu, within Champagne-en-Valromey, reached on foot from the village. The ground near the tufa and the circular basin stays wet, so wear shoes with grip. Water flow is strongest after rain or snowmelt.

The cascade du Pain de sucre appears in a scene of Fou d'amour, Philippe Ramos's 2015 film. The waterfall is fed by the Brize, and its name comes from the conical limestone deposit, the "Pain de sucre", over which the water falls. The site lies in the Ain department, at Poisieu in Champagne-en-Valromey.