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Keywords from Image Description:
The Giant Dome largest stalagmite thus far discovered. It is feet in diameter and estimated to be million years NARA . Local identifier AAW Department of the Interior National Park Service Branch of Still and Motion Pictures NARAAuthor Adams Ansel Photographer File TheGiantDome largeststalagmitethusfardiscovered ItisfeetindiameterandestimatedtobemillionyearsNARA