James St. John:
Travertine rimstone (Crystal Onyx Cave, near Cave City, Kentucky, USA) 1
James St. John:
Travertine rimstone (Crystal Onyx Cave, near Cave City, Kentucky, USA) 2
James St. John:
Travertine rimstone (Crystal Onyx Cave, near Cave City, Kentucky, USA) 3
James St. John:
Travertine rimstone (Crystal Onyx Cave, near Cave City, Kentucky, USA) 4
James St. John:
Travertine rimstone (Crystal Onyx Cave, near Cave City, Kentucky, USA) 5
James St. John:
Travertine rimstone (Crystal Onyx Cave, near Cave City, Kentucky, USA) 6
James St. John:
Travertine rimstone (Crystal Onyx Cave, near Cave City, Kentucky, USA) 7
James St. John:
Travertine rimstone (Crystal Onyx Cave, near Cave City, Kentucky, USA) 8
James St. John:
Travertine rimstone (Crystal Onyx Cave, near Cave City, Kentucky, USA) 9
James St. John:
Travertine rimstone & microgours covering dripstone (Crystal Onyx Cave, near Cave City, Kentucky, USA)
James St. John:
Rimstone (Crystal Onyx Cave, near Cave City, Kentucky, USA) 10
James St. John:
Rimstone (Crystal Onyx Cave, near Cave City, Kentucky, USA) 11
James St. John:
Rimstone (Crystal Onyx Cave, near Cave City, Kentucky, USA) 12
James St. John:
Rimstone (Crystal Onyx Cave, near Cave City, Kentucky, USA) 13
James St. John:
Rimstone (Crystal Onyx Cave, near Cave City, Kentucky, USA) 14
James St. John:
Rimstone (Crystal Onyx Cave, near Cave City, Kentucky, USA) 15
James St. John:
Rimstone (Crystal Onyx Cave, near Cave City, Kentucky, USA) 16
James St. John:
Rimstone (Crystal Onyx Cave, near Cave City, Kentucky, USA) 17