In the heart of Oregon’s high desert, just south of Bend, lies a vast volcanic landscape that whispers tales of fire and ...

Volcanic glass has been discovered at more than 500 archaeological sites in western Canada. Geologically-speaking, it shouldn ...

Hand-carved arrowheads and jagged spears made of obsidian, a sharp rock formed by volcanic magma, are remnants of vast prehistoric trade networks that once cut across western North America.