obsidian
Obsidian was a strong tool material that was valued and traded by the Northern Cheyenne. Included is a story of how they learned about obsidian from three boys.
obsidian – video content (6:11)
Versatile tool making material (0:15)
Widely traded commodity (1:14)
An old story about three boys and obsidian (1:48)

Support for Learning
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