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Archeologist Rodrigo Orozco inspecting one of thousands of old obsidian quarries located west of Guadalajara, Mexico. Ancient miners rarely had to dig deeper than a meter to find all the obsidian they needed.

Archeologist Rodrigo Orozco inspecting one of thousands of old obsidian quarries located west of Guadalajara, Mexico. Ancient miners rarely had to dig deeper than a meter to find all the obsidian they needed.

© John Pint, 2009

Source article: Obsidian in Mexico: gift of the gods
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