Obsidian Cliff, Volcanic glass cliff in Yellowstone National Park, US.
Obsidian Cliff rises 98 feet vertically, displaying a massive wall of black volcanic glass formed through rapid cooling of silica-rich magma.
Native Americans extracted obsidian from this location for over 11,000 years, creating tools and weapons that reached trading networks across North America.
The site holds spiritual significance for numerous Native American tribes who maintained oral histories about collecting materials from this sacred location.
Visitors can access the cliff along the Grand Loop Road between Mammoth and Norris, with designated parking areas and informational displays.
The 1988 forest fire that affected 90% of the plateau created conditions that enabled archaeologists to conduct extensive surveys of mining activities.
GPS coordinates: 44.82086,-110.72757
Latest update: March 6, 2025 16:38
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