"Illuminated Stalactite, Man on Right, Large Stalactite…
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"Illuminated Stalactite, Man on Right, Large Stalactite Formation in 'the Kings Palace,' Carlsbad Caverns National Park," New Mexico (Vertical Orientation)
Credit: National Archives, Records of the National Park Service (Record Group 79), 79-AAW-3. Public domain (U.S. federal record). National Archives: access unrestricted, use unrestricted.