Bat in Bore Hole Cave, West Virginia.
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Ann in Tiger Cave, Belize.
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Entrance to Deer Cave from the air, Mulu National Park, Borneo
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Unusual formation in Cango Cave, South Africa
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The Jungle Room in California Caverns, CA.
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Ann Bosted rappelling into Tom's Lake in California Caverns, CA. Glen Malliet is in the boat.
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Long soda straws in a cave in Switzerland.
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"Goliath", a giant stalagmite in Cottonwood Cave, NM.
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"Goliath", a giant stalagmite in Cottonwood Cave, NM.
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Caverns of Sonora, Texas
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The Fairy Pool in Crystal Sequoia Cave, CA.
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Two cavers ascending in Cuchillo Cave, Mexico.
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"The Witch" in a cave in the Czech Republic.
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Ann in a cave in the Czech Republic.
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"Cave grapes" in a cave in New Mexico.
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A decorated section of Hurricane Crawl Cave, CA.
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The big room in Hurricane Crawl Cave, CA.
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"Inverted cup" in Hurricane Crawl Cave, CA.
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Tim Jones in the Chandelier Ballroom, Lechuguilla Cave, NM.
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Tower Place, Lechuguilla Cave, NM.
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Ann in Tower Place, Lechuguilla Cave, NM.
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Aragonite bush in Lechuguilla Cave, NM.
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Aragonite spray, Lechuguilla Cave, NM.
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Ann in the Pearlsian Gulf, Lechuguilla Cave, NM.
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Ann in the Pearlsian Gulf, Lechuguilla Cave, NM.
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Chrris Stine in Yo Acres, Lechuguilla Cave, NM.
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Brent Ort in Lake Castrovelva, Lechuguilla Cave, NM.
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Stalactites in The Oasis, Lechuguilla Cave, NM.
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Stalactites and shelfstone in The Oasis, Lechuguilla Cave, NM.
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Helictites and soda straw in The Oasis, Lechuguilla Cave, NM.
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Glen Malliet in the Oasis, Lechuguilla Cave, NM.
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Ann traversing delicate pool in Lechuguilla Cave, NM.
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The "Purple People Eater" in the Outback in Lechuguilla Cave, NM.
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Glen Malliet in Atlantis, Lechuguilla Cave, NM.
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Glen Malliet in Atlantis, Lechuguilla Cave, NM.
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Micha Peraladov in Hudson Bay, Lechuguilla Cave, NM.
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Don Coons in Spar City, Lechuguilla Cave, NM.
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Tower Place, Lechuguilla Cave, NM.
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Cave pearls in the Pearlsian Gulf, Lechuguilla Cave, NM.
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Popcorn and aragonite, Lechuguilla Cave, NM.
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Helictite in the Nativity Chamber, Lechuguilla Cave, NM.
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Jeff Cheraz swimming in fast water in Midnight Creek Cave, CA.
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Ascending the entrance pit of Montemayor Cave, Mexico.
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Massive flowstone in Onyx Cave, AZ
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Ann having fun in Roppel Cave, KY.
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The "Clansman" in Slaughter Canyon Cave, NM.
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The "Christmas Tree" in Slaughter Canyon Cave, NM.
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Ann Bosted in the entrance of Planinska Jama, Slovenia.
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Vertical entrance shaft in Ojo Guarena, Spain.
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Helictites and rafts in Fuentemolinos Cave, Spain
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Flowstone curtain in Cap Coutan Cave, Turkmenistan.
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Sunbeam in Grobelaars Cave, South Africa
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Colorful alophane display in Mbobo Makulu Cave, South Africa
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Blue aragonite in a caave in South Africa
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Thin columns in a Western cave.
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Looking out of a Baja sea cave (Tunneles Parallelos) at sunset.
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Glen Malliet rapelling across entrance of Big Door Cave, NM.
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Vivian Loftin in Turtle Cave section of Green Cathedral Cave, Borneo.
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Brad Hacker in Snail Shell Cave, Borneo.
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Back-lit caver in Snail Shell Cave, Borneo
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The huge trunk passage of Deer Cave, Mulu National Park, Borneo.
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Jed Mosenfelder in Lagan Cave, Mulu National Park, Borneo.
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Don Coons traversing a pool in Good Luck Cave, Mulu National Park, Borneo
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The "Tesla Coil" in Breezeway Cave, CO.
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Helictites in Breezeway Cave, CO.
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Massive flowstone area in Cango Cave, South Africa
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Helictites and flowstone in Cango Cave, South Africa
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Massive flowstone area in Cango Cave, South Africa
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Lake of the Clouds in Carlsbad Cavern, NM.
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Ann traversing the river in Vallorbe Cave, Switzerland.
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Cave pearls in a Western Cave.
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Lava tube with ice lake.
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The (former) "Butterfly" in Caverns of Sonora, Texas
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Ann in Crystal Sequoia Cave, CA.
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Ann in Cuchillo Cave, Mexico.
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Ann Bosted in the Tea Leaf Room in Delta Cave System, HI
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Green helictites in a French Cave.
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Daniel Chailloux in La Combe du Pretre, France.
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Jan in La Combe du Pretre, France.
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Guillaume Barbier traversing a pool in Ig de la Goudou, France.
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Rob Countess in Glory 'Ole Cave, British Columbia, Canada
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Soda straws and stals in a cave in New Mexico.
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Lake and flowstone in a cave in New Mexico.
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A decorated section of Hurricane Crawl Cave, CA.
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Ann and Sheila Underwood in Hellhole Cave, WV.
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Striated stalactites in Baradla Cave, Hungary.
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Large trunk passage in Baradla Cave, Hungary.
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Underground Atlanta, Lechuguilla Cave, NM.
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Tower Place, Lechuguilla Cave, NM.
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Lake of the Blue Giants, Lechuguilla Cave, NM.
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Ann and Brent Ort in Lake Castrovelva, Lechuguilla Cave, NM.
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Brent Ort in Lake Castrovelva, Lechuguilla Cave, NM.
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Shelfstone and aragonite bushes in the Pecos River passage in Lechuguilla Cave, NM.
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Ann in the Chandelier Ballroom, Lechuguilla Cave, NM.
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Aragonite spray, Lechuguilla Cave, NM.
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Aragonite bush in Paris Texas, Lechuguilla Cave, NM.
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Ann Bosted in Rocky River Cave, TN, October 2006.
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Park ranger leading a tour into Slaughter Canyon Cave, NM.
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Large trunk passage in Ojo Guarena, Spain.
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Helictites and rafts in Fuentemolinos Cave, Spain
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Aragonite stalactites
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Aragonite in abundance
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Group entering a cave in South Africa
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Back-lit stalactites in a Western cave.
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Helictites in a Western cave.
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Sue Bosted, Ricky Bosted, and Jim DeLaLoza in Wind Cave, SD.
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Rod Horrocks sketching in Wind Cave, SD.
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