Obsidian Cliff, also known as 48YE433, was an important source of lithic materials for prehistoric peoples in Yellowstone National Park near …
Reviews
Tripadvisor
4.0/5 · 5 reviews
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Jul 24, 2023
My family and I did our homework before visiting the Obsidian Cliff. The cliff was just off the side of the road. There were signs mentioning that the site was closed and that there should be no e… Full review by T6895MLjosephr
Jan 14, 2023
Visiting the actual cliff is not so easy and a bit discouraged since there has been too much wear and tear. Instead there is a easy access roadside display that gives good quality information plus so… Full review by Hermes_NL
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