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Caption: "Carlsbad Caverns -- New Mexico, May 30, 34." View looking into dark cave mouth of Carlsbad Cavern, a series of natural underground chambers including the "Big Room," the fifth-largest such chamber in North America with a length of 1,000 feet, a width of 625 feet, and a maximum height of 255 feet. The site was named Carlsbad Cave National Monument in 1923, and declared Carlsbad Caverns National Park in 1930.
Date: 5/30/1934
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