soil layers dating back to the Pleistocene era with arrows pointing a time period

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Size: 5366px × 3581px
Location: Hot Springs, South Dakota, USA
Photo credit: © Gina Rodgers / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: active, america, dakota, dig, era, excavation, hot, laminated, landmark, layers, mammoth, national, natural, north, paleontological, pleistocene, sediments, silt, site, soil, south, springs, states, united