Obsidian Cliff

Park County, United States

Obsidian Cliff, also known as 48YE433, was an important source of lithic materials for prehistoric peoples in Yellowstone National Park near Mammoth Hot Springs, Wyoming, United States. The cliff was named by Philetus Norris, the second park superintendent in 1878. It was declared a National Historic Landmark in 1996.

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Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).

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