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LAVA TUBES OF ICELAND
Photos from the Tenth International Symposium of Vulcanospeleology, held in September 2000 in Reykavik, Iceland.
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CARLSBAD CAVERNS
Vertical caving in the Slaughter Canyon backcountry of Carlsbad Caverns, New Mexico.
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GYPSUM KARST PROJECT (GypKaP)
Caving in UFO country near Roswell, New Mexico, in the infamous stream tunnels of Gypkap, New Mexico.
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EL MALPAIS NATIONAL MONUMENT
Photos from Harry's five-year mapping project of lava tubes in El Malpais National Monument, New Mexico.
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NSS CONVENTION 2000
Photos from the 2000 NSS Convention at the OTR site in Dailey, West Virginia.
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NSS CONVENTION 2005
Vertical pits at the 2005 NSS Convention in TAG country (Tennessee, Alabama, Georgia).
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NSS CONVENTION 2006
The 2006 NSS Convention in lava tube country, Bellingham, Washington.
Pre-convention camp at Mount Saint Helens.
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NSS CONVENTION 2007
The 2007 NSS Convention in the heartland, Marengo, Indiana.
The convention was interrupted by a micro burst that destroyed the campground.
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