Recording data from a Sperry Glacier snow pit

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Size: 3008px × 2000px
Photo credit: © NPS / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: change, climate, climatechange, glacier, glaciernationalpark, glaciers, global, globalwarming, national, nationalpark, nationalparkservice, nps, park, photography, repeat, repeatphotography, research, science, service, usgs, warming