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Gypsum flowers Kings Mountain National Military Park Gypsum Flowers
Cave, New Discovery, gypsum Mammoth Cave National Park; National Park Service
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1939-09
Cave, New Discovery, gypsum Mammoth Cave National Park; National Park Service
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1939-09
Cave, New Discovery, needle gypsum Mammoth Cave National Park; National Park Service
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Cave, New Discovery, needle gypsum Mammoth Cave National Park; National Park Service
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Cave, rock with gypsum deposits Mammoth Cave National Park; National Park Service
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Circa 1935
Caves, New Discovery, gypsum ribbon Mammoth Cave National Park; National Park Service
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Caves, gypsum formation on Morrison Avenue Mammoth Cave National Park; National Park Service
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Circa 1942
Caves, gypsum flowers on Morrison Avenue Mammoth Cave National Park; National Park Service
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Circa 1942
Caves, gypsum flowers on Morrison Avenue Mammoth Cave National Park; National Park Service
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Circa 1942
Gypsum deposits, unknown location in cave Mammoth Cave National Park; National Park Service
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Circa 1935
Gypsum deposits, unknown location in cave Mammoth Cave National Park; National Park Service
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Circa 1935
Cave, New Discovery, gypsum floral pattern Mammoth Cave National Park; National Park Service
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Cave, New Discovery, gypsum floral pattern Mammoth Cave National Park; National Park Service
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Cave, New Discovery, gypsum floral pattern Mammoth Cave National Park; National Park Service
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Gypsum flowers in unidentified area of cave Mammoth Cave National Park; National Park Service
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Circa 1942
Cave, New Discovery, gypsum (Little Paradise) Mammoth Cave National Park; National Park Service
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1939-09
Gypsum flowers in unidentified area of cave Mammoth Cave National Park; National Park Service
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Circa 1942
Gypsum flowers in unidentified area of cave Mammoth Cave National Park; National Park Service
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Circa 1942
Cave, New Discovery, gypsum (Little Paradise) Mammoth Cave National Park; National Park Service
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1939-09
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