cave 22

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Vicksburg Siege Cave

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Humboldt Cave

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Pictograph Cave

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Graham Cave

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Great Onyx Cave Entrance

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Mammoth Cave Historic District

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Robbers Cave State Park

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Saltpeter cave, Natural Bri...

1900

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Choy Cave, Mexico

1891

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Under the Cave of the Winds

1901

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Demonbreun's Cave

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Russell Cave National Monument

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Interior, Choy Cave, Mexico

1880

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Cave pool, Analomink River,...

1900

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Perry Cave, Put-In-Bay, Ohio

1904

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Anemone Cave, Mt. Desert Is...

1900

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Interior of cave, El Abra, ...

1880

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Exterior, Choy Cave, Mexico

1880

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Interior of cave, El Abra, ...

1880

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Interior of the cave of Ela...

1880