La Source de la Douix is a beautiful sightseeing spot close to the center of Châtillon-sur-Seine, a small city located in North-East of France. It is also a nicely decorated cave, not very deep and not quite long, but worth the visit.
Divers: Dmitriy Esakov, Thibaut Wavreille, Michael Fineschi.
This map is provided as a very rough indication of the location of the dive site