Snowflake obsidian is a form of volcanic glass that features white or grayish “snowflake” shapes made of embedded cristobalite. These pretty patterns are not artificially added as a cheap ...

For the ancestral peoples of the Pacific Coast, obsidian (volcanic glass) was a highly valued raw material because it could be used to make razor-sharp cutting tools. However, for many parts of the ...

Obsidian is a black volcanic glass; deposits found here were historically used by Indigenous peoples to craft tools. Over 80 plant species in the area have traditional uses in medicine ...

referring to the wealth of obsidian deposits in the area, which were formed by ancient lava flows. The dormant Medicine Lake Volcano sits in the middle of the monument and stretches over an area ...

The inhabitants were long-headed people of good stature. They made sharp, beautiful weapons out of obsidian from a nearby volcano and cultivated barley, peas and primitive kinds of wheat.

A decade earlier, Rademaker’s advisor, archaeologist Daniel Sandweiss, had made the unexpected discovery of flakes and tools made of obsidian, a volcanic rock, in excavations at one of the oldest ...

it's possible we'll discover unknown underwater volcanoes. 19:58 There are many things we don't understand, and it's a lot of work, but it's an exciting field. Approximately 60% of the world's ...