A small tufa that owes its name to the porous stone: the tufa. The latter comes from a deposit of limestone dissolved during the crossing of the Langres plateau. In contact with the air and vegetation, the limestone settles on the mosses, which eventually creates successive small dams giving rise to this small natural staircase. Due to its small surface area and the immediate proximity of the road, this unfenced site remains a fragile natural environment: be careful not to step on it so that one day it may one day become as big as the tufa of Amorey or Rolampont.