The petrifying cave is the oldest tourist site of the village of Trôo. Already open to the public in the early twentieth century, this small space, dedicated to the long process of hard water, is interesting, both from a geological point of view or a tourist one. You can discover stalactites, the remains of the old chapel of St. Gabriel, his petrified bowl and all the wonderful work of water on the tuffeau (local limestone) in 300 years. Self visit.
