The cave is the most amazing geological curiosity of the Ardennes, it is carved into the limestone and Givet would originate in a vacuum that has formed due to a difference of inclination of banks to their meeting point after breaking and lifting . The cave has three levels, two of which are accessible to tourists, is a drop of 35 m, we see many rooms with abundant concretions.
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Holiday houses nearby of Grotte de Nichet Fromelennes