underground river

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Size: 5301px × 7952px
Location:
Photo credit: © Marco Faggi / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: adventure, calcifications, cave, departement, doubs, dripstone, explore, france, franche-comte, karst, lime, nature, research, river, scientist, settlements, sight, sinter, speleo, speleology, stalactite, stalagmite, stalagmites, underground