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DescriptionView of Serpent Mound Impact Structure (southern Ohio, USA) 3.jpg English: Near the left margin of the photograph and just right of the tree...
DescriptionView of Serpent Mound Impact Structure (southern Ohio, USA) 7.jpg English: The hills on the horizon & the lower hills in front of the horizon...
DescriptionView of Serpent Mound Impact Structure (southern Ohio, USA) 5.jpg English: The hills on the horizon & the lower hills in front of the horizon...
DescriptionView of Serpent Mound Impact Structure (southern Ohio, USA) 6.jpg English: The hills on the horizon & the lower hills in front of the horizon...
https://creativecommons.org/licenses/by-sa/4.0CC BY-SA 4.0 Creative Commons Attribution-Share Alike 4.0 truetrue English Footprint of Hyolithe cerops, found in the...
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