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NOAA Photo Library Image - amer0174

The Obsidian Cliffs. Stone from these cliffs is found as far east as the Hopewell Mounds in Chillicothe, Ohio, dating to 400 A.D. indicating extensive pre-historic native American trade routes across North America.

Image ID: amer0174, NOAA's Small World Collection
Location: Wyoming, Yellowstone National Park
Photo Date: 2011 June 28
Photographer: Dr. David Goodrich, NOAA (ret.)

High Resolution Photo Available

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Last Updated:
November 10, 2017