Speleologists at the entrance to the Grotte de Vermondans cave

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Photo credit: © Marco Faggi / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: adventure, calcifications, cave, de, departement, doubs, dripstone, entrance, explore, france, franche-comte, grotte, karst, lime, nature, research, scientist, settlements, sight, sinter, speleo, speleologists, speleology, underground, vermondans, water