For thousands of years, Native Americans traveled to special quarries in the Cascade Mountains to make obsidian tools.

Researchers Find Shards of Obsidian Inside Lake Huron, Native Americans May Have Used It as a Hunting Area A lot of Ice Age remnants did not survive the effects of natural forces and other factors ...

Thanks to a discovery by a local landowner, archaeologists unearthed the first recorded Native American tools of their kind in the Willamette Valley this summer.