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naturenps: Bacteria growing within water drops colors the walls golden in Golden Dome Cave in Lava Beds National Monument.
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naturenps: A cave-adapted crayfish with eggs in Mammoth Cave National Park.
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naturenps: A cave-adapted harvestman in Mammoth Cave National Park.
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naturenps: A cave-adapted millipede in Mammoth Cave National Park.
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naturenps: A cave cricket in Mammoth Cave National Park.
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naturenps: A small colony of Townsend's Big Eared bats in Lava Beds National Monument.
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naturenps: A solitary roosting bat in Mammoth Cave National Park.