Huge petrifying waterfall (tufa-stone). The waterfall owes its name to the porous stone: the tuff. The latter comes from a limestone deposit dissolved during the crossing of the Langres plateau. In contact with the air and vegetation, the limestone settles on the mosses, which ends up creating small successive dams thus giving birth to this monumental staircase. Located in a forest massif, the waterfall is divided into many cascatelles, in the form of basins into which the water flows. Free access after 15 min walk.