"Formations, a few of many natural formations at Carlsbad…
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"Formations, a few of many natural formations at Carlsbad Caverns. Carlsbad Caverns National Park," New Mexico. (vertical orientation)
Credit: National Archives, Records of the National Park Service (Record Group 79), 79-AAW-15. Public domain (U.S. federal record). National Archives: access unrestricted, use unrestricted.
