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