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Photos

Cave Exploration

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Photo: A spelunker descends into a cave in San Luis Potosi, Mexico
Photo: A spelunker descends into a cave in San Luis Potosi, MexicoPhoto: A skeleton in the Actun Tunichil Muknal Cave in Cayo, BelizePhoto: Fantastic Pit, in Ellison's Cave, GeorgiaPhoto: Handprints on the walls of Handprint Cave in BelizePhoto: A caver descends into Hytop Drop, in the Walls of Jericho, TennesseePhoto: Prehistoric animal paintings in Lascaux Cave, FrancePhoto: A cave explorer examines the Majlis al Jinn cave in OmanPhoto: A cave in Matanuska Glacier in Alaska's Chugach MountainsPhoto: An ice cave in KenyaPhoto: Sharp limestone formations hang from the ceiling of the Tardis Cave in Borneo
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A cave explorer, called a spelunker, begins a 1,234-foot (376-meter) descent into Sótano de las Golondrinas, a cave in San Luis Potosí, Mexico. The cave's entrance is the second deepest in the world, so the trip is dangerous even for experienced explorers.
Photograph by Stephen Alvarez 
National Geographic.com
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