Obsidian Cliff January 14, 2025 Obsidian Cliff in Yellowstone Park is the largest deposit of obsidian in North America. Native Americans have used this for thousands of years for scrapers, spears and arrow heads. More than two dozen tribes would peacefully gather obsidian in this war free zone. Pieces of this obsidian has been found as far as the East coast and central America. Knapping, the process of making arrow heads is still used today.

Obsidian Cliff

January 14, 2025

Obsidian Cliff in Yellowstone Park is the largest deposit of obsidian in North America. Native Americans have used this for thousands of years for scrapers, spears and arrow heads. More than two dozen tribes would peacefully gather obsidian in this war free zone. Pieces of this obsidian has been found as far as the East coast and central America. Knapping, the process of making arrow heads is still used today.