Longest caves in France
The longest cave in France in the EspeleoWorld catalogue is Grotte de la Luire (57,940 m), followed by Siphon d'Arbois and Trou du Glaz.
The longest cave in France in the EspeleoWorld catalogue is Grotte de la Luire (57,940 m), followed by Siphon d'Arbois and Trou du Glaz.