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Annabelle Dempsey: Subaqueous Formation, Fern Cave, Jackson county, Alabama
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Annabelle Dempsey: Coralloid calcite, Fern Cave, Jackson county, Alabama
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Annabelle Dempsey: Limestone, Fern Cave, Jackson county, Alabama
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Annabelle Dempsey: Helictites, Fern Cave, Jackson County, Alabama 1
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Annabelle Dempsey: Helictites, Fern Cave, Jackson County, Alabama
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Annabelle Dempsey: Wall of Helictites, Fern Cave, Jackson County, Alabama
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Annabelle Dempsey: Helictites under Longwave Light,, Fern Cave, Jackson County, Alabama
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Annabelle Dempsey: Helictites, Fern Cave, Jackson County, Alabama