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9th Annual Smithsonian Magazine Photo Contest Natural World
Metamorphic Sioux Quartzite erratics brought by glaciation 600,000 years ago and left in the fields of Kansas.

Metamorphic Sioux Quartzite erratics brought by glaciation 600,000 years ago and left in the fields of Kansas.

Photo Detail
Date Taken: 03.2011
Date Uploaded: 04.2011
Photo Location:
Camera: Canon EOS REBEL T1i
Copyright: © Sarah Swartz