Andy and Bonny Armstrong in Target Room, Jewel Cave, S. Dakota

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Bonny Armstrong and Ann Bosted in Rum Runner Lane, Jewel Cave, S. Dakota

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Ann Bosted in the Fountain of Youth Room, Jewel Cave, S. Dakota

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Andy and Bonny Armstrong in Fountain of Youth Room, Jewel Cave, S. Dakota

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Spar in Rum Runner Lane, Jewel Cave, S. Dakota

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Spar and stalactites in the Formation Room, Jewel Cave, S. Dakota

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Colorful flowstone in the Fountain of Youth Room, Jewel Cave, S. Dakota

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Gypsum "spider", Jewel Cave, S. Dakota

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Gypsum "spider", Jewel Cave, S. Dakota

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Gypsum "spider", Jewel Cave, S. Dakota

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Mike Wiles with Popcorn stalagmites, Jewel Cave, S. Dakota

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Mike Wiles studying geology of Jewel Cave, S. Dakota

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